All pastes #2492270 Raw Edit

btrfs-cleaner pinned CPU to 100%

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#2492270 ·published 2013-12-05 00:18 UTC
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# ========
# captured on: Wed Dec  4 19:12:40 2013
# hostname : <scrubbed>
# os release : 3.12.2-1-ARCH
# perf version : 3.12.0
# arch : x86_64
# nrcpus online : 8
# nrcpus avail : 8
# cpudesc : Intel(R) Core(TM) i7-3610QM CPU @ 2.30GHz
# cpuid : GenuineIntel,6,58,9
# total memory : 8074004 kB
# cmdline : /usr/bin/perf record -a -g sleep 60 
# event : name = cycles, type = 0, config = 0x0, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, excl_host = 0, excl_guest = 1, precise_ip = 0, attr_mmap2 = 0, attr_mmap  = 1, attr_mmap_data = 0
# HEADER_CPU_TOPOLOGY info available, use -I to display
# HEADER_NUMA_TOPOLOGY info available, use -I to display
# pmu mappings: cpu = 4, software = 1, tracepoint = 2, uncore_cbox_0 = 6, uncore_cbox_1 = 7, uncore_cbox_2 = 8, uncore_cbox_3 = 9, breakpoint = 5
# ========
#
# Samples: 310K of event 'cycles'
# Event count (approx.): 220052138119
#
# Overhead          Command                           Shared Object                                                                                                                                                                                                                                                                   Symbol
# ........  ...............  ......................................  .......................................................................................................................................................................................................................................................................
#
    19.39%    btrfs-cleaner  [kernel.kallsyms]                       [k] radix_tree_lookup_element                                                                                                                                                                                                                                          
              |
              --- radix_tree_lookup_element
                 |          
                 |--61.21%-- radix_tree_lookup
                 |          |          
                 |          |--99.93%-- __do_page_cache_readahead
                 |          |          ondemand_readahead
                 |          |          page_cache_sync_readahead
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |           --0.07%-- [...]
                 |          
                 |--27.08%-- radix_tree_prev_hole
                 |          ondemand_readahead
                 |          page_cache_sync_readahead
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--4.97%-- radix_tree_lookup_slot
                 |          find_get_page
                 |          find_lock_page
                 |          find_or_create_page
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--3.95%-- __do_page_cache_readahead
                 |          ondemand_readahead
                 |          page_cache_sync_readahead
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--2.48%-- ondemand_readahead
                 |          page_cache_sync_readahead
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.32%-- [...]

     7.06%    btrfs-cleaner  [kernel.kallsyms]                       [k] _raw_spin_lock                                                                                                                                                                                                                                                     
              |
              --- _raw_spin_lock
                 |          
                 |--25.37%-- btrfs_split_extent_hook
                 |          split_state
                 |          __set_extent_bit
                 |          lock_extent_bits
                 |          |          
                 |          |--97.20%-- lock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.80%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--25.15%-- __set_extent_bit
                 |          |          
                 |          |--98.25%-- lock_extent_bits
                 |          |          |          
                 |          |          |--97.03%-- lock_extent
                 |          |          |          btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |          |          
                 |          |           --2.97%-- btrfs_defrag_file
                 |          |                     btrfs_run_defrag_inodes
                 |          |                     cleaner_kthread
                 |          |                     kthread
                 |          |                     ret_from_fork
                 |          |          
                 |           --1.75%-- set_extent_defrag
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--24.46%-- btrfs_merge_extent_hook
                 |          merge_state.part.35
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--97.59%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.41%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--12.73%-- clear_extent_bit
                 |          |          
                 |          |--94.31%-- unlock_extent
                 |          |          |          
                 |          |          |--99.98%-- btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |           --0.02%-- [...]
                 |          |          
                 |          |--2.86%-- unlock_extent_cached
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.82%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--2.34%-- lock_extent_bits
                 |          |          
                 |          |--97.19%-- lock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.81%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--1.95%-- merge_state.part.35
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--96.88%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --3.12%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--1.85%-- split_state
                 |          __set_extent_bit
                 |          lock_extent_bits
                 |          |          
                 |          |--97.00%-- lock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --3.00%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--0.94%-- unlock_extent
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--0.68%-- btrfs_delalloc_reserve_metadata
                 |          btrfs_delalloc_reserve_space
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--0.51%-- block_rsv_release_bytes
                 |          btrfs_block_rsv_release
                 |          btrfs_delalloc_release_metadata
                 |          btrfs_clear_bit_hook
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --4.00%-- [...]

     4.90%    btrfs-cleaner  [kernel.kallsyms]                       [k] __etree_search.constprop.48                                                                                                                                                                                                                                        
              |
              --- __etree_search.constprop.48
                 |          
                 |--72.15%-- __set_extent_bit
                 |          lock_extent_bits
                 |          |          
                 |          |--97.07%-- lock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.93%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--25.25%-- clear_extent_bit
                 |          unlock_extent
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--1.99%-- lock_extent_bits
                 |          |          
                 |          |--98.52%-- lock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --1.48%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--0.61%-- unlock_extent
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.01%-- [...]

     3.67%       VirtualBox  [kernel.kallsyms]                       [k] 0x00007fffa0fc94dd                                                                                                                                                                                                                                                 
                 |          
                 |--46.97%-- 0xffffffffa0fc8482
                 |          __GI___ioctl
                 |          0x7fbf8b97b602
                 |          0x7fbf8b90eb04
                 |          0x7fbf8b90b95f
                 |          0x7fbf8b975d5c
                 |          0x7fbfa2e02a7c
                 |          0x7fbfa2e63c7c
                 |          start_thread
                 |          
                 |--12.38%-- 0xffffffffa0fc8890
                 |          __GI___ioctl
                 |          0x7fbf8b97b602
                 |          0x7fbf8b90eb04
                 |          0x7fbf8b90b95f
                 |          0x7fbf8b975d5c
                 |          0x7fbfa2e02a7c
                 |          0x7fbfa2e63c7c
                 |          start_thread
                 |          
                 |--1.38%-- 0xffffffffa0fc84dd
                 |          __GI___ioctl
                 |          0x7fbf8b97b602
                 |          0x7fbf8b90eb04
                 |          0x7fbf8b90b95f
                 |          0x7fbf8b975d5c
                 |          0x7fbfa2e02a7c
                 |          0x7fbfa2e63c7c
                 |          start_thread
                 |          
                 |--0.83%-- 0xffffffffa0fc8512
                 |          __GI___ioctl
                 |          0x7fbf8b97b602
                 |          0x7fbf8b90eb04
                 |          0x7fbf8b90b95f
                 |          0x7fbf8b975d5c
                 |          0x7fbfa2e02a7c
                 |          0x7fbfa2e63c7c
                 |          start_thread
                 |          
                 |--0.81%-- 0xffffffffa107a422
                 |          __GI___ioctl
                 |          |          
                 |          |--95.93%-- 0x7fbf8b97b602
                 |          |          0x7fbf8b90eb04
                 |          |          0x7fbf8b90b95f
                 |          |          0x7fbf8b975d5c
                 |          |          0x7fbfa2e02a7c
                 |          |          0x7fbfa2e63c7c
                 |          |          start_thread
                 |          |          
                 |           --4.07%-- SUPR3CallVMMR0Ex
                 |                     |          
                 |                     |--65.65%-- 0x7fbf8b974bfb
                 |                     |          0x7fbf8b975af3
                 |                     |          0x7fbf8b90c215
                 |                     |          0x7fbf8b975d5c
                 |                     |          0x7fbfa2e02a7c
                 |                     |          0x7fbfa2e63c7c
                 |                     |          start_thread
                 |                     |          
                 |                      --34.35%-- 0x7fbf4cd6ba93
                 |                                0x7fbf4cd6bd49
                 |                                0x7fbf4cd6c710
                 |                                0x7fbf8b9edfc1
                 |                                PGMPhysWrite
                 |                                0x7fbf8b99b60d
                 |          
                 |--0.68%-- 0xffffffffa107a46a
                 |          __GI___ioctl
                 |          |          
                 |          |--95.46%-- 0x7fbf8b97b602
                 |          |          0x7fbf8b90eb04
                 |          |          0x7fbf8b90b95f
                 |          |          0x7fbf8b975d5c
                 |          |          0x7fbfa2e02a7c
                 |          |          0x7fbfa2e63c7c
                 |          |          start_thread
                 |          |          
                 |           --4.54%-- SUPR3CallVMMR0Ex
                 |                     |          
                 |                     |--80.78%-- 0x7fbf8b974bfb
                 |                     |          0x7fbf8b975af3
                 |                     |          0x7fbf8b90c215
                 |                     |          0x7fbf8b975d5c
                 |                     |          0x7fbfa2e02a7c
                 |                     |          0x7fbfa2e63c7c
                 |                     |          start_thread
                 |                     |          
                 |                      --19.22%-- 0x7fbf4cd6ba93
                 |                                0x7fbf4cd6bd49
                 |                                0x7fbf4cd6c710
                 |                                0x7fbf8b9edfc1
                 |                                PGMPhysWrite
                 |                                0x7fbf8b99b60d
                 |          
                 |--0.64%-- 0xffffffffa107a409
                 |          __GI___ioctl
                 |          |          
                 |          |--95.23%-- 0x7fbf8b97b602
                 |          |          0x7fbf8b90eb04
                 |          |          0x7fbf8b90b95f
                 |          |          0x7fbf8b975d5c
                 |          |          0x7fbfa2e02a7c
                 |          |          0x7fbfa2e63c7c
                 |          |          start_thread
                 |          |          
                 |           --4.77%-- SUPR3CallVMMR0Ex
                 |                     |          
                 |                     |--54.95%-- 0x7fbf8b974bfb
                 |                     |          0x7fbf8b975af3
                 |                     |          0x7fbf8b90c215
                 |                     |          0x7fbf8b975d5c
                 |                     |          0x7fbfa2e02a7c
                 |                     |          0x7fbfa2e63c7c
                 |                     |          start_thread
                 |                     |          
                 |                      --45.05%-- 0x7fbf4cd6ba93
                 |                                0x7fbf4cd6bd49
                 |                                0x7fbf4cd6c710
                 |                                0x7fbf8b9edfc1
                 |                                PGMPhysWrite
                 |                                0x7fbf8b99b60d
                 |          
                 |--0.56%-- 0xffffffffa107a3f0
                 |          __GI___ioctl
                 |          |          
                 |          |--91.04%-- 0x7fbf8b97b602
                 |          |          0x7fbf8b90eb04
                 |          |          0x7fbf8b90b95f
                 |          |          0x7fbf8b975d5c
                 |          |          0x7fbfa2e02a7c
                 |          |          0x7fbfa2e63c7c
                 |          |          start_thread
                 |          |          
                 |           --8.96%-- SUPR3CallVMMR0Ex
                 |                     |          
                 |                     |--54.02%-- 0x7fbf4cd6ba93
                 |                     |          0x7fbf4cd6bd49
                 |                     |          0x7fbf4cd6c710
                 |                     |          0x7fbf8b9edfc1
                 |                     |          PGMPhysWrite
                 |                     |          0x7fbf8b99b60d
                 |                     |          
                 |                      --45.98%-- 0x7fbf8b974bfb
                 |                                0x7fbf8b975af3
                 |                                0x7fbf8b90c215
                 |                                0x7fbf8b975d5c
                 |                                0x7fbfa2e02a7c
                 |                                0x7fbfa2e63c7c
                 |                                start_thread
                  --35.74%-- [...]

     2.91%    btrfs-cleaner  [kernel.kallsyms]                       [k] kmem_cache_alloc                                                                                                                                                                                                                                                   
              |
              --- kmem_cache_alloc
                 |          
                 |--92.12%-- alloc_extent_state
                 |          |          
                 |          |--72.15%-- __set_extent_bit
                 |          |          |          
                 |          |          |--98.85%-- lock_extent_bits
                 |          |          |          |          
                 |          |          |          |--97.47%-- lock_extent
                 |          |          |          |          btrfs_defrag_file
                 |          |          |          |          btrfs_run_defrag_inodes
                 |          |          |          |          cleaner_kthread
                 |          |          |          |          kthread
                 |          |          |          |          ret_from_fork
                 |          |          |          |          
                 |          |          |           --2.53%-- btrfs_defrag_file
                 |          |          |                     btrfs_run_defrag_inodes
                 |          |          |                     cleaner_kthread
                 |          |          |                     kthread
                 |          |          |                     ret_from_fork
                 |          |          |          
                 |          |           --1.15%-- set_extent_defrag
                 |          |                     btrfs_defrag_file
                 |          |                     btrfs_run_defrag_inodes
                 |          |                     cleaner_kthread
                 |          |                     kthread
                 |          |                     ret_from_fork
                 |          |          
                 |           --27.85%-- clear_extent_bit
                 |                     |          
                 |                     |--94.50%-- unlock_extent
                 |                     |          btrfs_defrag_file
                 |                     |          btrfs_run_defrag_inodes
                 |                     |          cleaner_kthread
                 |                     |          kthread
                 |                     |          ret_from_fork
                 |                     |          
                 |                     |--3.05%-- btrfs_defrag_file
                 |                     |          btrfs_run_defrag_inodes
                 |                     |          cleaner_kthread
                 |                     |          kthread
                 |                     |          ret_from_fork
                 |                     |          
                 |                      --2.45%-- unlock_extent_cached
                 |                                btrfs_defrag_file
                 |                                btrfs_run_defrag_inodes
                 |                                cleaner_kthread
                 |                                kthread
                 |                                ret_from_fork
                 |          
                 |--5.77%-- __set_extent_bit
                 |          |          
                 |          |--99.57%-- lock_extent_bits
                 |          |          |          
                 |          |          |--97.20%-- lock_extent
                 |          |          |          btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |          |          
                 |          |           --2.80%-- btrfs_defrag_file
                 |          |                     btrfs_run_defrag_inodes
                 |          |                     cleaner_kthread
                 |          |                     kthread
                 |          |                     ret_from_fork
                 |           --0.43%-- [...]
                 |          
                 |--2.08%-- clear_extent_bit
                 |          |          
                 |          |--95.25%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |          |--2.38%-- btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.36%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                  --0.03%-- [...]

     2.64%    btrfs-cleaner  [kernel.kallsyms]                       [k] _raw_spin_unlock                                                                                                                                                                                                                                                   
              |
              --- _raw_spin_unlock
                 |          
                 |--40.31%-- split_state
                 |          __set_extent_bit
                 |          lock_extent_bits
                 |          |          
                 |          |--96.82%-- lock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --3.18%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--39.91%-- merge_state.part.35
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--97.06%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.94%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--9.95%-- lock_extent_bits
                 |          |          
                 |          |--97.69%-- lock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.31%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--3.97%-- unlock_extent
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--1.72%-- btrfs_delalloc_reserve_metadata
                 |          btrfs_delalloc_reserve_space
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--0.74%-- btrfs_clear_bit_hook
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--0.69%-- btrfs_delalloc_reserve_space
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--0.63%-- set_state_bits
                 |          __set_extent_bit
                 |          set_extent_defrag
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--0.61%-- account_page_dirtied
                 |          __set_page_dirty_nobuffers
                 |          btrfs_set_page_dirty
                 |          set_page_dirty
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--0.54%-- btrfs_block_rsv_release
                 |          btrfs_delalloc_release_metadata
                 |          btrfs_clear_bit_hook
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.92%-- [...]

     2.20%    btrfs-cleaner  [kernel.kallsyms]                       [k] kmem_cache_free                                                                                                                                                                                                                                                    
              |
              --- kmem_cache_free
                 |          
                 |--95.46%-- free_extent_state.part.34
                 |          free_extent_state
                 |          |          
                 |          |--65.51%-- merge_state.part.35
                 |          |          clear_state_bit
                 |          |          clear_extent_bit
                 |          |          |          
                 |          |          |--97.11%-- unlock_extent
                 |          |          |          btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |          |          
                 |          |           --2.89%-- unlock_extent_cached
                 |          |                     btrfs_defrag_file
                 |          |                     btrfs_run_defrag_inodes
                 |          |                     cleaner_kthread
                 |          |                     kthread
                 |          |                     ret_from_fork
                 |          |          
                 |          |--33.21%-- clear_extent_bit
                 |          |          |          
                 |          |          |--94.16%-- unlock_extent
                 |          |          |          btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |          |          
                 |          |          |--2.97%-- btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |          |          
                 |          |           --2.87%-- unlock_extent_cached
                 |          |                     btrfs_defrag_file
                 |          |                     btrfs_run_defrag_inodes
                 |          |                     cleaner_kthread
                 |          |                     kthread
                 |          |                     ret_from_fork
                 |          |          
                 |           --1.28%-- __set_extent_bit
                 |                     set_extent_defrag
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                  --4.54%-- free_extent_state
                            |          
                            |--60.79%-- merge_state.part.35
                            |          clear_state_bit
                            |          clear_extent_bit
                            |          |          
                            |          |--98.24%-- unlock_extent
                            |          |          btrfs_defrag_file
                            |          |          btrfs_run_defrag_inodes
                            |          |          cleaner_kthread
                            |          |          kthread
                            |          |          ret_from_fork
                            |          |          
                            |           --1.76%-- unlock_extent_cached
                            |                     btrfs_defrag_file
                            |                     btrfs_run_defrag_inodes
                            |                     cleaner_kthread
                            |                     kthread
                            |                     ret_from_fork
                            |          
                            |--37.43%-- clear_extent_bit
                            |          |          
                            |          |--95.25%-- unlock_extent
                            |          |          btrfs_defrag_file
                            |          |          btrfs_run_defrag_inodes
                            |          |          cleaner_kthread
                            |          |          kthread
                            |          |          ret_from_fork
                            |          |          
                            |          |--2.86%-- unlock_extent_cached
                            |          |          btrfs_defrag_file
                            |          |          btrfs_run_defrag_inodes
                            |          |          cleaner_kthread
                            |          |          kthread
                            |          |          ret_from_fork
                            |          |          
                            |           --1.89%-- btrfs_defrag_file
                            |                     btrfs_run_defrag_inodes
                            |                     cleaner_kthread
                            |                     kthread
                            |                     ret_from_fork
                            |          
                             --1.77%-- __set_extent_bit
                                       set_extent_defrag
                                       btrfs_defrag_file
                                       btrfs_run_defrag_inodes
                                       cleaner_kthread
                                       kthread
                                       ret_from_fork

     2.15%    btrfs-cleaner  [kernel.kallsyms]                       [k] tree_insert                                                                                                                                                                                                                                                        
              |
              --- tree_insert
                 |          
                 |--94.44%-- __set_extent_bit
                 |          lock_extent_bits
                 |          |          
                 |          |--96.62%-- lock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --3.38%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                  --5.56%-- split_state
                            __set_extent_bit
                            lock_extent_bits
                            |          
                            |--96.40%-- lock_extent
                            |          btrfs_defrag_file
                            |          btrfs_run_defrag_inodes
                            |          cleaner_kthread
                            |          kthread
                            |          ret_from_fork
                            |          
                             --3.60%-- btrfs_defrag_file
                                       btrfs_run_defrag_inodes
                                       cleaner_kthread
                                       kthread
                                       ret_from_fork

     2.11%    btrfs-cleaner  [kernel.kallsyms]                       [k] free_extent_state                                                                                                                                                                                                                                                  
              |
              --- free_extent_state
                 |          
                 |--63.69%-- clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--96.54%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --3.46%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--28.87%-- unlock_extent
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--3.28%-- merge_state.part.35
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--94.37%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --5.63%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--1.67%-- clear_extent_bit
                 |          |          
                 |          |--96.93%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |          |--2.03%-- btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --1.04%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--1.00%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--0.75%-- unlock_extent_cached
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--0.70%-- set_extent_defrag
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.05%-- [...]

     1.99%    btrfs-cleaner  [kernel.kallsyms]                       [k] _raw_spin_lock_irq                                                                                                                                                                                                                                                 
              |
              --- _raw_spin_lock_irq
                 |          
                 |--46.86%-- btrfs_lookup_ordered_extent
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--45.95%-- __set_page_dirty_nobuffers
                 |          btrfs_set_page_dirty
                 |          set_page_dirty
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--3.60%-- btrfs_set_page_dirty
                 |          set_page_dirty
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--3.56%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.02%-- [...]

     1.91%    btrfs-cleaner  [kernel.kallsyms]                       [k] __mark_inode_dirty                                                                                                                                                                                                                                                 
              |
              --- __mark_inode_dirty
                 |          
                 |--96.86%-- __set_page_dirty_nobuffers
                 |          btrfs_set_page_dirty
                 |          set_page_dirty
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --3.14%-- btrfs_set_page_dirty
                            set_page_dirty
                            btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     1.68%    btrfs-cleaner  [kernel.kallsyms]                       [k] __rcu_read_unlock                                                                                                                                                                                                                                                  
              |
              --- __rcu_read_unlock
                 |          
                 |--69.64%-- __do_page_cache_readahead
                 |          ondemand_readahead
                 |          page_cache_sync_readahead
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--22.28%-- ondemand_readahead
                 |          page_cache_sync_readahead
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--5.90%-- find_get_page
                 |          find_lock_page
                 |          find_or_create_page
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--2.09%-- find_lock_page
                 |          find_or_create_page
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.09%-- [...]

     1.66%    btrfs-cleaner  [kernel.kallsyms]                       [k] btrfs_defrag_file                                                                                                                                                                                                                                                  
              |
              --- btrfs_defrag_file
                  btrfs_run_defrag_inodes
                  cleaner_kthread
                  kthread
                  ret_from_fork

     1.63%    btrfs-cleaner  [kernel.kallsyms]                       [k] clear_page_dirty_for_io                                                                                                                                                                                                                                            
              |
              --- clear_page_dirty_for_io
                 |          
                 |--96.50%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --3.50%-- btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     1.56%    btrfs-cleaner  [kernel.kallsyms]                       [k] dec_zone_page_state                                                                                                                                                                                                                                                
              |
              --- dec_zone_page_state
                 |          
                 |--96.43%-- clear_page_dirty_for_io
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --3.57%-- btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     1.46%    btrfs-cleaner  [kernel.kallsyms]                       [k] __set_extent_bit                                                                                                                                                                                                                                                   
              |
              --- __set_extent_bit
                 |          
                 |--93.84%-- lock_extent_bits
                 |          |          
                 |          |--97.01%-- lock_extent
                 |          |          |          
                 |          |          |--99.99%-- btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |           --0.01%-- [...]
                 |          |          
                 |           --2.99%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--4.22%-- lock_extent
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--1.77%-- set_extent_defrag
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.17%-- [...]

     1.32%    btrfs-cleaner  [kernel.kallsyms]                       [k] page_waitqueue                                                                                                                                                                                                                                                     
              |
              --- page_waitqueue
                 |          
                 |--97.53%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --2.47%-- unlock_page
                            btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     1.20%    btrfs-cleaner  [kernel.kallsyms]                       [k] __do_page_cache_readahead                                                                                                                                                                                                                                          
              |
              --- __do_page_cache_readahead
                 |          
                 |--99.97%-- ondemand_readahead
                 |          page_cache_sync_readahead
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.03%-- [...]

     1.18%    btrfs-cleaner  [kernel.kallsyms]                       [k] find_get_page                                                                                                                                                                                                                                                      
              |
              --- find_get_page
                 |          
                 |--97.15%-- find_lock_page
                 |          find_or_create_page
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --2.85%-- find_or_create_page
                            btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     1.17%    btrfs-cleaner  [kernel.kallsyms]                       [k] radix_tree_lookup                                                                                                                                                                                                                                                  
              |
              --- radix_tree_lookup
                 |          
                 |--66.49%-- ondemand_readahead
                 |          page_cache_sync_readahead
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--33.40%-- __do_page_cache_readahead
                 |          ondemand_readahead
                 |          page_cache_sync_readahead
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.11%-- [...]

     1.15%    btrfs-cleaner  [kernel.kallsyms]                       [k] __set_page_dirty_nobuffers                                                                                                                                                                                                                                         
              |
              --- __set_page_dirty_nobuffers
                 |          
                 |--97.45%-- btrfs_set_page_dirty
                 |          set_page_dirty
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --2.55%-- set_page_dirty
                            btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     1.09%    btrfs-cleaner  [kernel.kallsyms]                       [k] _raw_spin_lock_irqsave                                                                                                                                                                                                                                             
              |
              --- _raw_spin_lock_irqsave
                 |          
                 |--96.88%-- __wake_up
                 |          |          
                 |          |--99.97%-- clear_state_bit
                 |          |          clear_extent_bit
                 |          |          |          
                 |          |          |--96.99%-- unlock_extent
                 |          |          |          btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |          |          
                 |          |           --3.01%-- unlock_extent_cached
                 |          |                     btrfs_defrag_file
                 |          |                     btrfs_run_defrag_inodes
                 |          |                     cleaner_kthread
                 |          |                     kthread
                 |          |                     ret_from_fork
                 |           --0.03%-- [...]
                 |          
                 |--3.02%-- clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--94.64%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --5.36%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                  --0.10%-- [...]

     1.08%    btrfs-cleaner  [kernel.kallsyms]                       [k] _raw_spin_unlock_irqrestore                                                                                                                                                                                                                                        
              |
              --- _raw_spin_unlock_irqrestore
                 |          
                 |--99.87%-- clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--96.94%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --3.06%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                  --0.13%-- [...]

     1.04%    btrfs-cleaner  [kernel.kallsyms]                       [k] radix_tree_tag_set                                                                                                                                                                                                                                                 
              |
              --- radix_tree_tag_set
                 |          
                 |--93.67%-- __set_page_dirty_nobuffers
                 |          btrfs_set_page_dirty
                 |          set_page_dirty
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --6.33%-- btrfs_set_page_dirty
                            set_page_dirty
                            btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     1.02%    btrfs-cleaner  [kernel.kallsyms]                       [k] clear_extent_bit                                                                                                                                                                                                                                                   
              |
              --- clear_extent_bit
                 |          
                 |--87.79%-- unlock_extent
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--7.00%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--5.11%-- unlock_extent_cached
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.10%-- [...]

     0.99%    btrfs-cleaner  [kernel.kallsyms]                       [k] page_mapping                                                                                                                                                                                                                                                       
              |
              --- page_mapping
                 |          
                 |--55.04%-- btrfs_set_page_dirty
                 |          set_page_dirty
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--19.43%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--15.55%-- __set_page_dirty_nobuffers
                 |          btrfs_set_page_dirty
                 |          set_page_dirty
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--6.92%-- clear_page_dirty_for_io
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --3.06%-- set_page_dirty
                            btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.94%    btrfs-cleaner  [kernel.kallsyms]                       [k] unlock_page                                                                                                                                                                                                                                                        
              |
              --- unlock_page
                 |          
                 |--94.91%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --5.09%-- btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.92%    btrfs-cleaner  [kernel.kallsyms]                       [k] __rcu_read_lock                                                                                                                                                                                                                                                    
              |
              --- __rcu_read_lock
                 |          
                 |--44.87%-- __do_page_cache_readahead
                 |          ondemand_readahead
                 |          page_cache_sync_readahead
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--43.10%-- ondemand_readahead
                 |          page_cache_sync_readahead
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--6.68%-- find_get_page
                 |          find_lock_page
                 |          find_or_create_page
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--5.13%-- find_lock_page
                 |          find_or_create_page
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.21%-- [...]

     0.91%    btrfs-cleaner  [kernel.kallsyms]                       [k] set_page_dirty                                                                                                                                                                                                                                                     
              |
              --- set_page_dirty
                 |          
                 |--95.72%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --4.28%-- btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.86%          swapper  [kernel.kallsyms]                       [k] intel_idle                                                                                                                                                                                                                                                         
                    |
                    --- intel_idle
                       |          
                       |--99.78%-- cpuidle_enter_state
                       |          cpuidle_idle_call
                       |          arch_cpu_idle
                       |          cpu_startup_entry
                       |          |          
                       |          |--81.01%-- start_secondary
                       |          |          
                       |           --18.99%-- rest_init
                       |                     start_kernel
                       |                     x86_64_start_reservations
                       |                     x86_64_start_kernel
                        --0.22%-- [...]

     0.83%    btrfs-cleaner  [kernel.kallsyms]                       [k] alloc_extent_state                                                                                                                                                                                                                                                 
              |
              --- alloc_extent_state
                 |          
                 |--56.47%-- __set_extent_bit
                 |          |          
                 |          |--97.87%-- lock_extent_bits
                 |          |          |          
                 |          |          |--96.89%-- lock_extent
                 |          |          |          btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |          |          
                 |          |           --3.11%-- btrfs_defrag_file
                 |          |                     btrfs_run_defrag_inodes
                 |          |                     cleaner_kthread
                 |          |                     kthread
                 |          |                     ret_from_fork
                 |          |          
                 |           --2.13%-- set_extent_defrag
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--29.61%-- clear_extent_bit
                 |          |          
                 |          |--95.07%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |          |--2.75%-- btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.18%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--9.80%-- lock_extent_bits
                 |          |          
                 |          |--95.58%-- lock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --4.42%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--3.69%-- unlock_extent
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.43%-- [...]

     0.81%    btrfs-cleaner  [kernel.kallsyms]                       [k] __percpu_counter_add                                                                                                                                                                                                                                               
              |
              --- __percpu_counter_add
                 |          
                 |--56.08%-- account_page_dirtied
                 |          __set_page_dirty_nobuffers
                 |          btrfs_set_page_dirty
                 |          set_page_dirty
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--31.17%-- clear_page_dirty_for_io
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--6.90%-- __set_page_dirty_nobuffers
                 |          btrfs_set_page_dirty
                 |          set_page_dirty
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--3.99%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--0.88%-- btrfs_set_bit_hook
                 |          set_state_bits
                 |          __set_extent_bit
                 |          set_extent_defrag
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--0.62%-- btrfs_clear_bit_hook
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.35%-- [...]

     0.80%    btrfs-cleaner  [kernel.kallsyms]                       [k] merge_state.part.35                                                                                                                                                                                                                                                
              |
              --- merge_state.part.35
                 |          
                 |--96.10%-- clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--97.26%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.74%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                  --3.90%-- clear_extent_bit
                            |          
                            |--98.84%-- unlock_extent
                            |          btrfs_defrag_file
                            |          btrfs_run_defrag_inodes
                            |          cleaner_kthread
                            |          kthread
                            |          ret_from_fork
                            |          
                             --1.16%-- unlock_extent_cached
                                       btrfs_defrag_file
                                       btrfs_run_defrag_inodes
                                       cleaner_kthread
                                       kthread
                                       ret_from_fork

     0.78%    btrfs-cleaner  [kernel.kallsyms]                       [k] find_lock_page                                                                                                                                                                                                                                                     
              |
              --- find_lock_page
                 |          
                 |--95.56%-- find_or_create_page
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --4.44%-- btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.74%    btrfs-cleaner  [kernel.kallsyms]                       [k] split_state                                                                                                                                                                                                                                                        
              |
              --- split_state
                 |          
                 |--82.82%-- __set_extent_bit
                 |          lock_extent_bits
                 |          |          
                 |          |--97.02%-- lock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.98%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                  --17.18%-- lock_extent_bits
                            |          
                            |--98.31%-- lock_extent
                            |          btrfs_defrag_file
                            |          btrfs_run_defrag_inodes
                            |          cleaner_kthread
                            |          kthread
                            |          ret_from_fork
                            |          
                             --1.69%-- btrfs_defrag_file
                                       btrfs_run_defrag_inodes
                                       cleaner_kthread
                                       kthread
                                       ret_from_fork

     0.70%    btrfs-cleaner  [kernel.kallsyms]                       [k] put_page                                                                                                                                                                                                                                                           
              |
              --- put_page
                 |          
                 |--94.31%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--5.66%-- btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.03%-- [...]

     0.67%       VirtualBox  VBoxC.so                                [.] 0x000000000010d070                                                                                                                                                                                                                                                 
                 |          
                 |--12.06%-- 0x7fbf8480c0cd
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--7.43%-- 0x7fbf8480c0ca
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--6.21%-- 0x7fbf8480c0d9
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--5.55%-- 0x7fbf8480c0c7
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--5.53%-- 0x7fbf8480c0ac
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--5.28%-- 0x7fbf8480c0b8
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--5.04%-- 0x7fbf8480c0f2
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--4.98%-- 0x7fbf8480c0e4
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--3.80%-- 0x7fbf8480c0f6
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--3.71%-- 0x7fbf8480c0de
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--3.71%-- 0x7fbf8480c0bc
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--3.39%-- 0x7fbf8480c0be
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--3.34%-- 0x7fbf8480c0b2
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--3.20%-- 0x7fbf8480c0ec
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--2.88%-- 0x7fbf8480c0d3
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--1.94%-- 0x7fbf8480c122
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--1.77%-- 0x7fbf8480c0c4
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--1.64%-- 0x7fbf8480bffa
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--1.31%-- 0x7fbf8480c0d6
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--0.85%-- 0x7fbf8480c12b
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--0.77%-- 0x7fbf8480c190
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--0.70%-- 0x7fbf8480c0e2
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--0.66%-- 0x7fbf8480c133
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--0.58%-- 0x7fbf8480c0a3
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--0.58%-- 0x7fbf8480c0e7
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--0.56%-- 0x7fbf8480c0dc
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--0.54%-- 0x7fbf8480c19f
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--0.54%-- 0x7fbf8480c0aa
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--0.53%-- 0x7fbf8480c090
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                 |          
                 |--0.51%-- 0x7fbf8480c0a6
                 |          0x7fbf84881650
                 |          0x7fbf84888cfe
                 |          VBoxNsxpXPTC_InvokeByIndex
                 |          0x7fbf904a396d
                  --10.41%-- [...]

     0.65%    btrfs-cleaner  [kernel.kallsyms]                       [k] rb_insert_color                                                                                                                                                                                                                                                    
              |
              --- rb_insert_color
                 |          
                 |--88.97%-- tree_insert
                 |          split_state
                 |          __set_extent_bit
                 |          lock_extent_bits
                 |          |          
                 |          |--96.90%-- lock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --3.10%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--10.89%-- split_state
                 |          __set_extent_bit
                 |          lock_extent_bits
                 |          |          
                 |          |--96.96%-- lock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --3.04%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                  --0.14%-- [...]

     0.64%    btrfs-cleaner  [kernel.kallsyms]                       [k] account_page_dirtied                                                                                                                                                                                                                                               
              |
              --- account_page_dirtied
                 |          
                 |--94.68%-- __set_page_dirty_nobuffers
                 |          btrfs_set_page_dirty
                 |          set_page_dirty
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --5.32%-- btrfs_set_page_dirty
                            set_page_dirty
                            btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.62%    btrfs-endio-4  [kernel.kallsyms]                       [k] inflate_fast                                                                                                                                                                                                                                                       
              |
              --- inflate_fast
                  zlib_inflate
                  zlib_decompress_biovec
                  end_compressed_bio_read
                  bio_endio
                  end_workqueue_fn
                  worker_loop
                  kthread
                  ret_from_fork

     0.60%    btrfs-cleaner  [kernel.kallsyms]                       [k] free_extent_state.part.34                                                                                                                                                                                                                                          
              |
              --- free_extent_state.part.34
                 |          
                 |--67.71%-- free_extent_state
                 |          |          
                 |          |--65.30%-- merge_state.part.35
                 |          |          clear_state_bit
                 |          |          clear_extent_bit
                 |          |          |          
                 |          |          |--97.85%-- unlock_extent
                 |          |          |          btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |          |          
                 |          |           --2.15%-- unlock_extent_cached
                 |          |                     btrfs_defrag_file
                 |          |                     btrfs_run_defrag_inodes
                 |          |                     cleaner_kthread
                 |          |                     kthread
                 |          |                     ret_from_fork
                 |          |          
                 |          |--33.91%-- clear_extent_bit
                 |          |          |          
                 |          |          |--93.32%-- unlock_extent
                 |          |          |          btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |          |          
                 |          |          |--4.38%-- btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |          |          
                 |          |           --2.30%-- unlock_extent_cached
                 |          |                     btrfs_defrag_file
                 |          |                     btrfs_run_defrag_inodes
                 |          |                     cleaner_kthread
                 |          |                     kthread
                 |          |                     ret_from_fork
                 |          |          
                 |           --0.79%-- __set_extent_bit
                 |                     set_extent_defrag
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--20.49%-- merge_state.part.35
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--96.21%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --3.79%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--11.45%-- clear_extent_bit
                 |          |          
                 |          |--92.75%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |          |--3.67%-- btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --3.58%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                  --0.36%-- [...]

     0.58%    btrfs-cleaner  [kernel.kallsyms]                       [k] clear_state_bit                                                                                                                                                                                                                                                    
              |
              --- clear_state_bit
                 |          
                 |--93.94%-- clear_extent_bit
                 |          |          
                 |          |--94.15%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |          |--2.93%-- unlock_extent_cached
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.92%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--5.57%-- unlock_extent
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.49%-- [...]

     0.54%    btrfs-cleaner  [kernel.kallsyms]                       [k] set_page_extent_mapped                                                                                                                                                                                                                                             
              |
              --- set_page_extent_mapped
                  btrfs_run_defrag_inodes
                  cleaner_kthread
                  kthread
                  ret_from_fork

     0.54%    btrfs-cleaner  [kernel.kallsyms]                       [k] _raw_spin_unlock_irq                                                                                                                                                                                                                                               
              |
              --- _raw_spin_unlock_irq
                 |          
                 |--62.62%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--37.24%-- btrfs_set_page_dirty
                 |          set_page_dirty
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.13%-- [...]

     0.48%    btrfs-cleaner  [kernel.kallsyms]                       [k] radix_tree_prev_hole                                                                                                                                                                                                                                               
              |
              --- radix_tree_prev_hole
                 |          
                 |--99.85%-- ondemand_readahead
                 |          page_cache_sync_readahead
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.15%-- [...]

     0.47%    btrfs-endio-6  [kernel.kallsyms]                       [k] inflate_fast                                                                                                                                                                                                                                                       
              |
              --- inflate_fast
                  zlib_inflate
                  zlib_decompress_biovec
                  end_compressed_bio_read
                  bio_endio
                  end_workqueue_fn
                  worker_loop
                  kthread
                  ret_from_fork

     0.43%    btrfs-endio-7  [kernel.kallsyms]                       [k] inflate_fast                                                                                                                                                                                                                                                       
              |
              --- inflate_fast
                  zlib_inflate
                  zlib_decompress_biovec
                  end_compressed_bio_read
                  bio_endio
                  end_workqueue_fn
                  worker_loop
                  kthread
                  ret_from_fork

     0.43%    btrfs-cleaner  [kernel.kallsyms]                       [k] lock_extent_bits                                                                                                                                                                                                                                                   
              |
              --- lock_extent_bits
                 |          
                 |--75.09%-- lock_extent
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--24.44%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.47%-- [...]

     0.43%    btrfs-cleaner  [kernel.kallsyms]                       [k] __wake_up_bit                                                                                                                                                                                                                                                      
              |
              --- __wake_up_bit
                 |          
                 |--93.94%-- unlock_page
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --6.06%-- btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.40%    btrfs-cleaner  [kernel.kallsyms]                       [k] btrfs_merge_extent_hook                                                                                                                                                                                                                                            
              |
              --- btrfs_merge_extent_hook
                 |          
                 |--68.44%-- merge_state.part.35
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--97.63%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.37%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                  --31.56%-- clear_state_bit
                            clear_extent_bit
                            |          
                            |--95.72%-- unlock_extent
                            |          btrfs_defrag_file
                            |          btrfs_run_defrag_inodes
                            |          cleaner_kthread
                            |          kthread
                            |          ret_from_fork
                            |          
                             --4.28%-- unlock_extent_cached
                                       btrfs_defrag_file
                                       btrfs_run_defrag_inodes
                                       cleaner_kthread
                                       kthread
                                       ret_from_fork

     0.38%    btrfs-cleaner  [kernel.kallsyms]                       [k] set_state_bits                                                                                                                                                                                                                                                     
              |
              --- set_state_bits
                 |          
                 |--89.46%-- __set_extent_bit
                 |          |          
                 |          |--98.00%-- lock_extent_bits
                 |          |          |          
                 |          |          |--96.44%-- lock_extent
                 |          |          |          btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |          |          
                 |          |           --3.56%-- btrfs_defrag_file
                 |          |                     btrfs_run_defrag_inodes
                 |          |                     cleaner_kthread
                 |          |                     kthread
                 |          |                     ret_from_fork
                 |          |          
                 |           --2.00%-- set_extent_defrag
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--10.18%-- lock_extent_bits
                 |          |          
                 |          |--96.29%-- lock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --3.71%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                  --0.36%-- [...]

     0.36%    btrfs-cleaner  [kernel.kallsyms]                       [k] rb_erase                                                                                                                                                                                                                                                           
              |
              --- rb_erase
                 |          
                 |--80.13%-- merge_state.part.35
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--97.52%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.48%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--19.78%-- clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--97.48%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.52%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                  --0.10%-- [...]

     0.35%    btrfs-cleaner  [kernel.kallsyms]                       [k] btrfs_split_extent_hook                                                                                                                                                                                                                                            
              |
              --- btrfs_split_extent_hook
                 |          
                 |--79.53%-- split_state
                 |          __set_extent_bit
                 |          lock_extent_bits
                 |          |          
                 |          |--97.44%-- lock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --2.56%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                  --20.47%-- __set_extent_bit
                            lock_extent_bits
                            |          
                            |--96.01%-- lock_extent
                            |          btrfs_defrag_file
                            |          btrfs_run_defrag_inodes
                            |          cleaner_kthread
                            |          kthread
                            |          ret_from_fork
                            |          
                             --3.99%-- btrfs_defrag_file
                                       btrfs_run_defrag_inodes
                                       cleaner_kthread
                                       kthread
                                       ret_from_fork

     0.35%    btrfs-cleaner  [kernel.kallsyms]                       [k] __inc_zone_state                                                                                                                                                                                                                                                   
              |
              --- __inc_zone_state
                 |          
                 |--57.40%-- __inc_zone_page_state
                 |          account_page_dirtied
                 |          __set_page_dirty_nobuffers
                 |          btrfs_set_page_dirty
                 |          set_page_dirty
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --42.60%-- account_page_dirtied
                            __set_page_dirty_nobuffers
                            btrfs_set_page_dirty
                            set_page_dirty
                            btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.32%    btrfs-cleaner  [kernel.kallsyms]                       [k] btrfs_lookup_ordered_extent                                                                                                                                                                                                                                        
              |
              --- btrfs_lookup_ordered_extent
                 |          
                 |--87.64%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --12.36%-- btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.31%    btrfs-cleaner  [kernel.kallsyms]                       [k] __init_waitqueue_head                                                                                                                                                                                                                                              
              |
              --- __init_waitqueue_head
                 |          
                 |--44.00%-- __set_extent_bit
                 |          |          
                 |          |--99.20%-- lock_extent_bits
                 |          |          |          
                 |          |          |--95.72%-- lock_extent
                 |          |          |          btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |          |          
                 |          |           --4.28%-- btrfs_defrag_file
                 |          |                     btrfs_run_defrag_inodes
                 |          |                     cleaner_kthread
                 |          |                     kthread
                 |          |                     ret_from_fork
                 |          |          
                 |           --0.80%-- set_extent_defrag
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--32.86%-- alloc_extent_state
                 |          |          
                 |          |--68.39%-- __set_extent_bit
                 |          |          |          
                 |          |          |--98.96%-- lock_extent_bits
                 |          |          |          |          
                 |          |          |          |--96.32%-- lock_extent
                 |          |          |          |          btrfs_defrag_file
                 |          |          |          |          btrfs_run_defrag_inodes
                 |          |          |          |          cleaner_kthread
                 |          |          |          |          kthread
                 |          |          |          |          ret_from_fork
                 |          |          |          |          
                 |          |          |           --3.68%-- btrfs_defrag_file
                 |          |          |                     btrfs_run_defrag_inodes
                 |          |          |                     cleaner_kthread
                 |          |          |                     kthread
                 |          |          |                     ret_from_fork
                 |          |          |          
                 |          |           --1.04%-- set_extent_defrag
                 |          |                     btrfs_defrag_file
                 |          |                     btrfs_run_defrag_inodes
                 |          |                     cleaner_kthread
                 |          |                     kthread
                 |          |                     ret_from_fork
                 |          |          
                 |           --31.61%-- clear_extent_bit
                 |                     |          
                 |                     |--94.34%-- unlock_extent
                 |                     |          btrfs_defrag_file
                 |                     |          btrfs_run_defrag_inodes
                 |                     |          cleaner_kthread
                 |                     |          kthread
                 |                     |          ret_from_fork
                 |                     |          
                 |                     |--4.51%-- unlock_extent_cached
                 |                     |          btrfs_defrag_file
                 |                     |          btrfs_run_defrag_inodes
                 |                     |          cleaner_kthread
                 |                     |          kthread
                 |                     |          ret_from_fork
                 |                     |          
                 |                      --1.15%-- btrfs_defrag_file
                 |                                btrfs_run_defrag_inodes
                 |                                cleaner_kthread
                 |                                kthread
                 |                                ret_from_fork
                 |          
                  --23.14%-- clear_extent_bit
                            |          
                            |--89.38%-- unlock_extent
                            |          btrfs_defrag_file
                            |          btrfs_run_defrag_inodes
                            |          cleaner_kthread
                            |          kthread
                            |          ret_from_fork
                            |          
                            |--7.08%-- btrfs_defrag_file
                            |          btrfs_run_defrag_inodes
                            |          cleaner_kthread
                            |          kthread
                            |          ret_from_fork
                            |          
                             --3.55%-- unlock_extent_cached
                                       btrfs_defrag_file
                                       btrfs_run_defrag_inodes
                                       cleaner_kthread
                                       kthread
                                       ret_from_fork

     0.31%    btrfs-cleaner  [kernel.kallsyms]                       [k] __lookup_extent_mapping                                                                                                                                                                                                                                            
              |
              --- __lookup_extent_mapping
                 |          
                 |--97.56%-- lookup_extent_mapping
                 |          |          
                 |          |--99.41%-- defrag_lookup_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |           --0.59%-- [...]
                 |          
                 |--2.33%-- defrag_lookup_extent
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.12%-- [...]

     0.29%       VirtualBox  VBoxVMM.so                              [.] 0x00000000000e660c                                                                                                                                                                                                                                                 
                 |          
                 |--2.01%-- 0x7fbf8ba20721
                 |          |          
                 |          |--36.53%-- 0x7fbf8b90eb5b
                 |          |          0x7fbf8b90b95f
                 |          |          0x7fbf8b975d5c
                 |          |          0x7fbfa2e02a7c
                 |          |          0x7fbfa2e63c7c
                 |          |          start_thread
                 |          |          
                 |          |--33.08%-- TMR3TimerQueuesDo
                 |          |          0x7fbf8b974b09
                 |          |          0x7fbf8b975af3
                 |          |          0x7fbf8b90c215
                 |          |          0x7fbf8b975d5c
                 |          |          0x7fbfa2e02a7c
                 |          |          0x7fbfa2e63c7c
                 |          |          start_thread
                 |          |          
                 |          |--16.80%-- 0x7fbf8b974b84
                 |          |          0x7fbf8b975af3
                 |          |          0x7fbf8b90c215
                 |          |          0x7fbf8b975d5c
                 |          |          0x7fbfa2e02a7c
                 |          |          0x7fbfa2e63c7c
                 |          |          start_thread
                 |          |          
                 |           --13.59%-- 0x7fbfa2e645eb
                 |                     0x7fbfa2e02a7c
                 |                     0x7fbfa2e63c7c
                 |                     start_thread
                 |          
                 |--1.48%-- 0x7fbf8b9a0d72
                 |          |          
                 |          |--59.12%-- 0xffffc900131b4940
                 |          |          0xfffff802ad9d4e7d
                 |          |          
                 |          |--18.38%-- 0xffffc900131b9940
                 |          |          0xfffff802ad9d4e7d
                 |          |          
                 |          |--12.92%-- 0xffffc900131c3940
                 |          |          0xfffff802ad9d4e7d
                 |          |          
                 |           --9.57%-- 0xffffc900131be940
                 |                     0xfffff802ad9d4e7d
                 |          
                 |--1.30%-- 0x7fbf8b90a9a1
                 |          |          
                 |          |--64.94%-- 0x7fbf8b975d5c
                 |          |          0x7fbfa2e02a7c
                 |          |          0x7fbfa2e63c7c
                 |          |          start_thread
                 |          |          
                 |           --35.06%-- 0x7fbf8b90b95f
                 |                     0x7fbf8b975d5c
                 |                     0x7fbfa2e02a7c
                 |                     0x7fbfa2e63c7c
                 |                     start_thread
                 |          
                 |--1.24%-- 0x7fbf8b90eb0d
                 |          0x7fbf8b90b95f
                 |          0x7fbf8b975d5c
                 |          0x7fbfa2e02a7c
                 |          0x7fbfa2e63c7c
                 |          start_thread
                 |          
                 |--1.03%-- 0x7fbf8b97b606
                 |          0x7fbf8b90eb04
                 |          0x7fbf8b90b95f
                 |          0x7fbf8b975d5c
                 |          0x7fbfa2e02a7c
                 |          0x7fbfa2e63c7c
                 |          start_thread
                 |          
                 |--1.02%-- 0x7fbf8b974475
                 |          |          
                 |          |--80.23%-- TMR3TimerQueuesDo
                 |          |          0x7fbf8b974b09
                 |          |          0x7fbf8b975af3
                 |          |          0x7fbf8b90c215
                 |          |          0x7fbf8b975d5c
                 |          |          0x7fbfa2e02a7c
                 |          |          0x7fbfa2e63c7c
                 |          |          start_thread
                 |          |          
                 |           --19.77%-- 0x7fbf8b923793
                 |                     0x7fbf4d06a40b
                 |                     0x7fbf8b92d70a
                 |                     0x7fbfa2e02a7c
                 |                     0x7fbfa2e63c7c
                 |                     start_thread
                 |          
                 |--0.97%-- 0x7fbf8b974bfe
                 |          0x7fbf8b975af3
                 |          0x7fbf8b90c215
                 |          0x7fbf8b975d5c
                 |          0x7fbfa2e02a7c
                 |          0x7fbfa2e63c7c
                 |          start_thread
                 |          
                 |--0.87%-- 0x7fbf8ba0e0a1
                 |          0x7fbf8ba0638d
                 |          0x7fbf8b9a0ec9
                 |          
                 |--0.84%-- 0x7fbf8b97447f
                 |          VMMGetCpu
                 |          |          
                 |          |--59.69%-- TMR3TimerQueuesDo
                 |          |          0x7fbf8b974b09
                 |          |          0x7fbf8b975af3
                 |          |          0x7fbf8b90c215
                 |          |          0x7fbf8b975d5c
                 |          |          0x7fbfa2e02a7c
                 |          |          0x7fbfa2e63c7c
                 |          |          start_thread
                 |          |          
                 |          |--21.46%-- 0x7fbf8b9edf43
                 |          |          PGMPhysWrite
                 |          |          0x7fbf8b99b60d
                 |          |          
                 |           --18.85%-- 0x7fbf8b923793
                 |                     |          
                 |                     |--40.97%-- 0x7fbf4d06a40b
                 |                     |          0x7fbf8b92d70a
                 |                     |          0x7fbfa2e02a7c
                 |                     |          0x7fbfa2e63c7c
                 |                     |          start_thread
                 |                     |          
                 |                     |--35.63%-- 0x7fbf4d03735d
                 |                     |          0x7fbf8b969c8e
                 |                     |          TMR3TimerQueuesDo
                 |                     |          0x7fbf8b974b09
                 |                     |          0x7fbf8b975af3
                 |                     |          0x7fbf8b90c215
                 |                     |          0x7fbf8b975d5c
                 |                     |          0x7fbfa2e02a7c
                 |                     |          0x7fbfa2e63c7c
                 |                     |          start_thread
                 |                     |          
                 |                      --23.40%-- 0x7fbf4d061145
                 |                                0x7fbf4d0630a3
                 |                                0x7fbf4d069da9
                 |                                0x7fbf4d06a6ca
                 |                                0x7fbf8b92d70a
                 |                                0x7fbfa2e02a7c
                 |                                0x7fbfa2e63c7c
                 |                                start_thread
                 |          
                 |--0.76%-- 0x7fbf8ba05f81
                 |          |          
                 |          |--81.98%-- 0x7fbf8b9a0ec9
                 |          |          
                 |           --18.02%-- 0x7fbf8b99e9ba
                 |          
                 |--0.76%-- 0x7fbf8ba11741
                 |          
                 |--0.72%-- 0x7fbf8ba0601a
                 |          0x7fbf8ba0638d
                 |          |          
                 |          |--71.59%-- 0x7fbf8b9a0ec9
                 |          |          
                 |           --28.41%-- 0x7fbf8b99e9ba
                 |          
                 |--0.71%-- 0x7fbf8b9a8ba2
                 |          |          
                 |           --100.00%-- 0xffffc900131be940
                 |                     0xfffff802ad9d4e7d
                 |          
                 |--0.66%-- 0x7fbf8b924a80
                 |          0x7fbf8b9edfc1
                 |          PGMPhysWrite
                 |          0x7fbf8b99b60d
                 |          
                 |--0.66%-- 0x7fbf8ba06371
                 |          
                 |--0.63%-- 0x7fbf8b9edf11
                 |          0x7fbf8b99b60d
                 |          
                 |--0.62%-- 0x7fbf8ba1d531
                 |          0x7fbf8b90b95f
                 |          0x7fbf8b975d5c
                 |          0x7fbfa2e02a7c
                 |          0x7fbfa2e63c7c
                 |          start_thread
                 |          
                 |--0.59%-- 0x7fbf8b9a1087
                 |          |          
                 |          |--81.37%-- 0xfffff802ad9d4e7d
                 |          |          
                 |           --18.63%-- 0x0
                 |          
                 |--0.58%-- 0x7fbf8b97b5e1
                 |          0x7fbf8b90b95f
                 |          0x7fbf8b975d5c
                 |          0x7fbfa2e02a7c
                 |          0x7fbfa2e63c7c
                 |          start_thread
                 |          
                 |--0.57%-- 0x7fbf8b9f0d72
                 |          0x7fbf8b9edf50
                 |          PGMPhysWrite
                 |          0x7fbf8b99b60d
                 |          
                 |--0.57%-- 0x7fbf8b999ce1
                 |          0xfffff802ad9d4e7d
                 |          
                 |--0.55%-- 0x7fbf8ba09421
                 |          |          
                 |          |--41.25%-- 0x7fbf8ba06051
                 |          |          0x7fbf8ba0638d
                 |          |          0x7fbf8b9a0ec9
                 |          |          
                 |          |--26.51%-- 0x7fbf4d06a40b
                 |          |          0x7fbf8b92d70a
                 |          |          0x7fbfa2e02a7c
                 |          |          0x7fbfa2e63c7c
                 |          |          start_thread
                 |          |          
                 |          |--18.28%-- 0x7fbf8b9a1075
                 |          |          
                 |          |--9.47%-- 0x7fbf8b99b60d
                 |          |          
                 |           --4.49%-- 0x7fbf4d03735d
                 |                     0x7fbf8b969c8e
                 |                     TMR3TimerQueuesDo
                 |                     0x7fbf8b974b09
                 |                     0x7fbf8b975af3
                 |                     0x7fbf8b90c215
                 |                     0x7fbf8b975d5c
                 |                     0x7fbfa2e02a7c
                 |                     0x7fbfa2e63c7c
                 |                     start_thread
                 |          
                 |--0.54%-- 0x7fbf8ba0dd3e
                 |          0x7fbf8ba0e107
                 |          |          
                 |          |--85.31%-- 0x7fbf8ba06051
                 |          |          0x7fbf8ba0638d
                 |          |          |          
                 |          |          |--85.88%-- 0x7fbf8b9a0ec9
                 |          |          |          
                 |          |           --14.12%-- 0x7fbf8b99e9ba
                 |          |          
                 |           --14.69%-- 0x7fbf8ba060fa
                 |                     0x7fbf8ba0638d
                 |                     0x7fbf8b99e9ba
                 |          
                 |--0.53%-- 0x7fbf8b974471
                 |          |          
                 |          |--66.00%-- 0x7fbf8b9edf43
                 |          |          PGMPhysWrite
                 |          |          0x7fbf8b99b60d
                 |          |          
                 |          |--25.20%-- 0x7fbf8b923793
                 |          |          0x7fbf4d06a40b
                 |          |          0x7fbf8b92d70a
                 |          |          0x7fbfa2e02a7c
                 |          |          0x7fbfa2e63c7c
                 |          |          start_thread
                 |          |          
                 |          |--5.35%-- TMTimerSetRelative
                 |          |          0x7fbf4cfce75a
                 |          |          0x7fbf8b969c8e
                 |          |          TMR3TimerQueuesDo
                 |          |          0x7fbf8b974b09
                 |          |          0x7fbf8b975af3
                 |          |          0x7fbf8b90c215
                 |          |          0x7fbf8b975d5c
                 |          |          0x7fbfa2e02a7c
                 |          |          0x7fbfa2e63c7c
                 |          |          start_thread
                 |          |          
                 |           --3.46%-- TMR3TimerQueuesDo
                 |                     0x7fbf8b974b09
                 |                     0x7fbf8b975af3
                 |                     0x7fbf8b90c215
                 |                     0x7fbf8b975d5c
                 |                     0x7fbfa2e02a7c
                 |                     0x7fbfa2e63c7c
                 |                     start_thread
                 |          
                 |--0.52%-- 0x7fbf8b9758f5
                 |          |          
                 |          |--69.32%-- 0x7fbf4cd6bd49
                 |          |          |          
                 |          |          |--76.00%-- 0x7fbf4cd6c710
                 |          |          |          0x7fbf8b9edfc1
                 |          |          |          PGMPhysWrite
                 |          |          |          0x7fbf8b99b60d
                 |          |          |          
                 |          |           --24.00%-- 0x7fbf4cd6be89
                 |          |                     0x7fbf4cd6cb12
                 |          |                     PDMIsaSetIrq
                 |          |                     0x7fbf8b92211c
                 |          |                     0x7fbf8b9692c3
                 |          |                     TMR3TimerQueuesDo
                 |          |                     0x7fbf8b974b09
                 |          |                     0x7fbf8b975af3
                 |          |                     0x7fbf8b90c215
                 |          |                     0x7fbf8b975d5c
                 |          |                     0x7fbfa2e02a7c
                 |          |                     0x7fbfa2e63c7c
                 |          |                     start_thread
                 |          |          
                 |           --30.68%-- 0x7fbfa2e02a7c
                 |                     0x7fbfa2e63c7c
                 |                     start_thread
                 |          
                 |--0.52%-- 0x7fbf8b96900f
                 |          TMR3TimerQueuesDo
                 |          0x7fbf8b974b09
                 |          0x7fbf8b975af3
                 |          0x7fbf8b90c215
                 |          0x7fbf8b975d5c
                 |          0x7fbfa2e02a7c
                 |          0x7fbfa2e63c7c
                 |          start_thread
                 |          
                 |--0.52%-- 0x7fbf8b969004
                 |          TMR3TimerQueuesDo
                 |          0x7fbf8b974b09
                 |          0x7fbf8b975af3
                 |          0x7fbf8b90c215
                 |          0x7fbf8b975d5c
                 |          0x7fbfa2e02a7c
                 |          0x7fbfa2e63c7c
                 |          start_thread
                 |          
                 |--0.52%-- 0x7fbf8ba05fc4
                 |          0x7fbf8ba0638d
                 |          |          
                 |          |--67.21%-- 0x7fbf8b9a0ec9
                 |          |          
                 |           --32.79%-- 0x7fbf8b99e9ba
                 |          
                 |--0.52%-- 0x7fbf8b90b4a4
                 |          0x7fbf8b975d5c
                 |          0x7fbfa2e02a7c
                 |          0x7fbfa2e63c7c
                 |          start_thread
                 |          
                 |--0.51%-- 0x7fbf8b9ba290
                 |          |          
                 |          |--64.20%-- 0xffffc900131be940
                 |          |          0xfffff802ad9d4e7d
                 |          |          
                 |          |--24.67%-- 0xffffc900131c3940
                 |          |          |          
                 |          |          |--65.12%-- 0x0
                 |          |          |          
                 |          |           --34.88%-- 0xfffff802ad9d4e7d
                 |          |          
                 |           --11.13%-- 0xffffc900131b9940
                 |                     0xfffff802ad9d4e7d
                  --76.66%-- [...]

     0.29%    btrfs-cleaner  [kernel.kallsyms]                       [k] __inc_zone_page_state                                                                                                                                                                                                                                              
              |
              --- __inc_zone_page_state
                 |          
                 |--78.16%-- account_page_dirtied
                 |          __set_page_dirty_nobuffers
                 |          btrfs_set_page_dirty
                 |          set_page_dirty
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --21.84%-- __set_page_dirty_nobuffers
                            btrfs_set_page_dirty
                            set_page_dirty
                            btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.29%    btrfs-cleaner  [kernel.kallsyms]                       [k] rb_next                                                                                                                                                                                                                                                            
              |
              --- rb_next
                 |          
                 |--60.85%-- clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--96.20%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |          |--2.59%-- unlock_extent_cached
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --1.20%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--26.41%-- merge_state.part.35
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--98.62%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --1.38%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--11.27%-- clear_extent_bit
                 |          |          
                 |          |--92.31%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |          |--4.37%-- btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --3.32%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--0.74%-- __set_extent_bit
                 |          |          
                 |          |--82.94%-- set_extent_defrag
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --17.06%-- lock_extent_bits
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                  --0.74%-- [...]

     0.29%    btrfs-cleaner  [kernel.kallsyms]                       [k] btrfs_clear_bit_hook                                                                                                                                                                                                                                               
              |
              --- btrfs_clear_bit_hook
                 |          
                 |--75.17%-- clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--74.53%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |          |--23.66%-- btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --1.82%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                  --24.83%-- clear_extent_bit
                            |          
                            |--95.48%-- unlock_extent
                            |          btrfs_defrag_file
                            |          btrfs_run_defrag_inodes
                            |          cleaner_kthread
                            |          kthread
                            |          ret_from_fork
                            |          
                            |--3.00%-- btrfs_defrag_file
                            |          btrfs_run_defrag_inodes
                            |          cleaner_kthread
                            |          kthread
                            |          ret_from_fork
                            |          
                             --1.52%-- unlock_extent_cached
                                       btrfs_defrag_file
                                       btrfs_run_defrag_inodes
                                       cleaner_kthread
                                       kthread
                                       ret_from_fork

     0.26%    btrfs-cleaner  [kernel.kallsyms]                       [k] find_or_create_page                                                                                                                                                                                                                                                
              |
              --- find_or_create_page
                 |          
                 |--74.12%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --25.88%-- btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.26%    btrfs-cleaner  [kernel.kallsyms]                       [k] __wake_up_common                                                                                                                                                                                                                                                   
              |
              --- __wake_up_common
                 |          
                 |--74.71%-- __wake_up
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--96.82%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --3.18%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                  --25.29%-- clear_state_bit
                            clear_extent_bit
                            |          
                            |--99.45%-- unlock_extent
                            |          btrfs_defrag_file
                            |          btrfs_run_defrag_inodes
                            |          cleaner_kthread
                            |          kthread
                            |          ret_from_fork
                            |          
                             --0.55%-- unlock_extent_cached
                                       btrfs_defrag_file
                                       btrfs_run_defrag_inodes
                                       cleaner_kthread
                                       kthread
                                       ret_from_fork

     0.25%    btrfs-cleaner  [kernel.kallsyms]                       [k] __wake_up                                                                                                                                                                                                                                                          
              |
              --- __wake_up
                 |          
                 |--86.68%-- clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--96.67%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --3.33%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--12.90%-- clear_extent_bit
                 |          |          
                 |          |--95.53%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --4.47%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                  --0.42%-- [...]

     0.23%    btrfs-cleaner  [kernel.kallsyms]                       [k] page_mkclean                                                                                                                                                                                                                                                       
              |
              --- page_mkclean
                 |          
                 |--87.57%-- clear_page_dirty_for_io
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --12.43%-- btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.23%    btrfs-endio-1  [kernel.kallsyms]                       [k] inflate_fast                                                                                                                                                                                                                                                       
              |
              --- inflate_fast
                  zlib_inflate
                  zlib_decompress_biovec
                  end_compressed_bio_read
                  bio_endio
                  end_workqueue_fn
                  worker_loop
                  kthread
                  ret_from_fork

     0.22%       VirtualBox  libglib-2.0.so.0.3800.2                 [.] 0x0000000000087fb2                                                                                                                                                                                                                                                 
                 |          
                 |--62.39%-- 0x7fbf984bcfba
                 |          0x1402950
                 |          |          
                 |          |--54.35%-- 0x1000003b3
                 |          |          
                 |           --45.65%-- 0x0
                 |          
                 |--14.73%-- 0x7fbf984bcfbd
                 |          0x1402950
                 |          |          
                 |          |--51.41%-- 0x0
                 |          |          
                 |           --48.59%-- 0x1000003b3
                 |          
                 |--5.22%-- 0x7fbf984bd19a
                 |          |          
                 |          |--62.46%-- 0x7fbf984a2240
                 |          |          0x1401a80
                 |          |          0x0
                 |          |          
                 |           --37.54%-- 0x7fbf98479e80
                 |                     0x7fbfa34a26a8
                 |          
                 |--1.93%-- 0x7fbf984bcfb0
                 |          |          
                 |          |--51.61%-- 0x7fbf00000001
                 |          |          0x1402950
                 |          |          |          
                 |          |          |--61.73%-- 0x1000003b3
                 |          |          |          
                 |          |           --38.27%-- 0x0
                 |          |          
                 |          |--37.56%-- 0x1
                 |          |          0x1402950
                 |          |          |          
                 |          |          |--62.71%-- 0x0
                 |          |          |          
                 |          |           --37.29%-- 0x1000003b3
                 |          |          
                 |           --10.83%-- 0x0
                 |          
                 |--1.77%-- 0x7fbf984bcfc0
                 |          0x1402950
                 |          |          
                 |          |--54.15%-- 0x1000003b3
                 |          |          
                 |           --45.85%-- 0x0
                 |          
                 |--1.70%-- 0x7fbf984bcfc2
                 |          0x1402950
                 |          |          
                 |          |--73.43%-- 0x0
                 |          |          
                 |           --26.57%-- 0x1000003b3
                 |          
                 |--1.30%-- 0x7fbf984bd19d
                 |          |          
                 |          |--81.66%-- 0x7fbf984a2240
                 |          |          0x1401a80
                 |          |          0x0
                 |          |          
                 |           --18.34%-- 0x7fbf98479e80
                 |                     0x7fbfa34a26a8
                 |          
                 |--1.28%-- 0x7fbf984bcfc9
                 |          |          
                 |          |--48.50%-- 0x1
                 |          |          0x1402950
                 |          |          |          
                 |          |          |--64.78%-- 0x0
                 |          |          |          
                 |          |           --35.22%-- 0x1000003b3
                 |          |          
                 |          |--34.65%-- 0x0
                 |          |          
                 |           --16.85%-- 0x7fbf00000001
                 |                     0x1402950
                 |                     0x0
                 |          
                 |--1.15%-- 0x7fbf984bcfb7
                 |          0x1402950
                 |          |          
                 |          |--81.21%-- 0x1000003b3
                 |          |          
                 |           --18.79%-- 0x0
                 |          
                 |--0.78%-- 0x7fbf984bcfb2
                 |          |          
                 |          |--52.32%-- 0x1
                 |          |          0x1402950
                 |          |          0x1000003b3
                 |          |          
                 |          |--28.63%-- 0x7fbf00000001
                 |          |          0x1402950
                 |          |          0x0
                 |          |          
                 |           --19.04%-- 0x0
                 |          
                 |--0.55%-- 0x7fbf9847a9ff
                 |          |          
                 |          |--83.82%-- 0x1
                 |          |          0x1402950
                 |          |          0x1000003b3
                 |          |          
                 |           --16.18%-- 0x7fbf00000001
                 |                     0x1402950
                 |                     0x1000003b3
                 |          
                 |--0.52%-- 0x7fbf9847a9eb
                 |          |          
                 |          |--57.20%-- 0x1
                 |          |          0x1402950
                 |          |          0x1000003b3
                 |          |          
                 |           --42.80%-- 0x7fbf00000001
                 |                     0x1402950
                 |                     0x1000003b3
                  --6.68%-- [...]

     0.21%    btrfs-cleaner  [kernel.kallsyms]                       [k] __mutex_lock_slowpath                                                                                                                                                                                                                                              
              |
              --- __mutex_lock_slowpath
                 |          
                 |--98.80%-- mutex_lock
                 |          |          
                 |          |--51.72%-- btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |          |--48.11%-- btrfs_delalloc_reserve_metadata
                 |          |          btrfs_delalloc_reserve_space
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |           --0.17%-- [...]
                 |          
                 |--0.86%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                  --0.34%-- [...]

     0.20%    btrfs-cleaner  [kernel.kallsyms]                       [k] __tree_search                                                                                                                                                                                                                                                      
              |
              --- __tree_search
                 |          
                 |--80.90%-- btrfs_lookup_ordered_extent
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --19.10%-- btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.17%  btrfs-delalloc-  [kernel.kallsyms]                       [k] lzo1x_1_do_compress                                                                                                                                                                                                                                                
            |
            --- lzo1x_1_do_compress
                lzo1x_1_compress
                lzo_compress_pages
                btrfs_compress_pages
                compress_file_range.constprop.60
                async_cow_start
                worker_loop
                kthread
                ret_from_fork

     0.15%    btrfs-cleaner  [kernel.kallsyms]                       [k] rb_prev                                                                                                                                                                                                                                                            
              |
              --- rb_prev
                 |          
                 |--53.97%-- merge_state.part.35
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--93.06%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --6.94%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--45.93%-- clear_state_bit
                 |          clear_extent_bit
                 |          |          
                 |          |--96.89%-- unlock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --3.11%-- unlock_extent_cached
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                  --0.10%-- [...]

     0.14%    btrfs-endio-4  [kernel.kallsyms]                       [k] zlib_inflate_table                                                                                                                                                                                                                                                 
              |
              --- zlib_inflate_table
                  zlib_inflate
                  zlib_decompress_biovec
                  end_compressed_bio_read
                  bio_endio
                  end_workqueue_fn
                  worker_loop
                  kthread
                  ret_from_fork

     0.14%    btrfs-cleaner  [kernel.kallsyms]                       [k] unlock_extent                                                                                                                                                                                                                                                      
              |
              --- unlock_extent
                 |          
                 |--50.45%-- btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --49.55%-- btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.13%       VirtualBox  VBoxVMM.so                              [.] PDMCritSectEnter                                                                                                                                                                                                                                                   
                 |
                 --- PDMCritSectEnter
                    |          
                    |--23.16%-- 0x7fbf8ba0e0bb
                    |          |          
                    |          |--50.32%-- 0x7fbf8ba06051
                    |          |          0x7fbf8ba0638d
                    |          |          |          
                    |          |          |--53.42%-- 0x7fbf8b9a0ec9
                    |          |          |          
                    |          |           --46.58%-- 0x7fbf8b99e9ba
                    |          |          
                    |          |--34.45%-- 0x7fbf8ba0609d
                    |          |          0x7fbf8ba0638d
                    |          |          |          
                    |          |          |--61.19%-- 0x7fbf8b99e9ba
                    |          |          |          
                    |          |           --38.81%-- 0x7fbf8b9a0ec9
                    |          |          
                    |           --15.23%-- 0x7fbf8ba060fa
                    |                     0x7fbf8ba0638d
                    |                     0x7fbf8b99e9ba
                    |          
                    |--20.02%-- PGMPhysRead
                    |          |          
                    |          |--65.22%-- 0x7fbf4d03721a
                    |          |          0x7fbf8b969c8e
                    |          |          TMR3TimerQueuesDo
                    |          |          |          
                    |          |          |--95.68%-- 0x7fbf8b974b09
                    |          |          |          0x7fbf8b975af3
                    |          |          |          0x7fbf8b90c215
                    |          |          |          0x7fbf8b975d5c
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |           --4.32%-- 0x7fbf8b90ac17
                    |          |                     |          
                    |          |                     |--70.99%-- 0x7fbf8b90b5af
                    |          |                     |          0x7fbf8b975d5c
                    |          |                     |          0x7fbfa2e02a7c
                    |          |                     |          0x7fbfa2e63c7c
                    |          |                     |          start_thread
                    |          |                     |          
                    |          |                      --29.01%-- 0x7fbf8b90eb7b
                    |          |                                0x7fbf8b90b95f
                    |          |                                0x7fbf8b975d5c
                    |          |                                0x7fbfa2e02a7c
                    |          |                                0x7fbfa2e63c7c
                    |          |                                start_thread
                    |          |          
                    |          |--16.77%-- 0x7fbf8b9a1075
                    |          |          
                    |          |--11.40%-- 0x7fbf4d03735d
                    |          |          0x7fbf8b969c8e
                    |          |          TMR3TimerQueuesDo
                    |          |          |          
                    |          |          |--93.50%-- 0x7fbf8b974b09
                    |          |          |          0x7fbf8b975af3
                    |          |          |          0x7fbf8b90c215
                    |          |          |          0x7fbf8b975d5c
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |           --6.50%-- 0x7fbf8b90ac17
                    |          |                     0x7fbf8b90eb7b
                    |          |                     0x7fbf8b90b95f
                    |          |                     0x7fbf8b975d5c
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |          |--2.45%-- 0x7fbf4d03725d
                    |          |          0x7fbf8b969c8e
                    |          |          TMR3TimerQueuesDo
                    |          |          0x7fbf8b974b09
                    |          |          0x7fbf8b975af3
                    |          |          0x7fbf8b90c215
                    |          |          0x7fbf8b975d5c
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |          |--2.25%-- 0x7fbf4d0364ef
                    |          |          0x7fbf4d037325
                    |          |          0x7fbf8b969c8e
                    |          |          TMR3TimerQueuesDo
                    |          |          |          
                    |          |          |--66.12%-- 0x7fbf8b974b09
                    |          |          |          0x7fbf8b975af3
                    |          |          |          0x7fbf8b90c215
                    |          |          |          0x7fbf8b975d5c
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |           --33.88%-- 0x7fbf8b90ac17
                    |          |                     0x7fbf8b90b5af
                    |          |                     0x7fbf8b975d5c
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |           --1.92%-- 0x7fbf4d036545
                    |                     0x7fbf4d037325
                    |                     0x7fbf8b969c8e
                    |                     TMR3TimerQueuesDo
                    |                     0x7fbf8b974b09
                    |                     0x7fbf8b975af3
                    |                     0x7fbf8b90c215
                    |                     0x7fbf8b975d5c
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                    |          
                    |--19.64%-- PGMPhysReleasePageMappingLock
                    |          |          
                    |          |--87.18%-- PGMPhysRead
                    |          |          |          
                    |          |          |--71.76%-- 0x7fbf4d03721a
                    |          |          |          0x7fbf8b969c8e
                    |          |          |          TMR3TimerQueuesDo
                    |          |          |          |          
                    |          |          |          |--93.93%-- 0x7fbf8b974b09
                    |          |          |          |          0x7fbf8b975af3
                    |          |          |          |          0x7fbf8b90c215
                    |          |          |          |          0x7fbf8b975d5c
                    |          |          |          |          0x7fbfa2e02a7c
                    |          |          |          |          0x7fbfa2e63c7c
                    |          |          |          |          start_thread
                    |          |          |          |          
                    |          |          |           --6.07%-- 0x7fbf8b90ac17
                    |          |          |                     |          
                    |          |          |                     |--52.82%-- 0x7fbf8b90b5af
                    |          |          |                     |          0x7fbf8b975d5c
                    |          |          |                     |          0x7fbfa2e02a7c
                    |          |          |                     |          0x7fbfa2e63c7c
                    |          |          |                     |          start_thread
                    |          |          |                     |          
                    |          |          |                      --47.18%-- 0x7fbf8b90eb7b
                    |          |          |                                0x7fbf8b90b95f
                    |          |          |                                0x7fbf8b975d5c
                    |          |          |                                0x7fbfa2e02a7c
                    |          |          |                                0x7fbfa2e63c7c
                    |          |          |                                start_thread
                    |          |          |          
                    |          |          |--11.40%-- 0x7fbf4d03735d
                    |          |          |          0x7fbf8b969c8e
                    |          |          |          TMR3TimerQueuesDo
                    |          |          |          0x7fbf8b974b09
                    |          |          |          0x7fbf8b975af3
                    |          |          |          0x7fbf8b90c215
                    |          |          |          0x7fbf8b975d5c
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |          |--9.90%-- 0x7fbf8b9a1075
                    |          |          |          
                    |          |          |--3.10%-- 0x7fbf4d036545
                    |          |          |          0x7fbf4d037325
                    |          |          |          0x7fbf8b969c8e
                    |          |          |          TMR3TimerQueuesDo
                    |          |          |          |          
                    |          |          |          |--85.00%-- 0x7fbf8b974b09
                    |          |          |          |          0x7fbf8b975af3
                    |          |          |          |          0x7fbf8b90c215
                    |          |          |          |          0x7fbf8b975d5c
                    |          |          |          |          0x7fbfa2e02a7c
                    |          |          |          |          0x7fbfa2e63c7c
                    |          |          |          |          start_thread
                    |          |          |          |          
                    |          |          |           --15.00%-- 0x7fbf8b90ac17
                    |          |          |                     0x7fbf8b90b5af
                    |          |          |                     0x7fbf8b975d5c
                    |          |          |                     0x7fbfa2e02a7c
                    |          |          |                     0x7fbfa2e63c7c
                    |          |          |                     start_thread
                    |          |          |          
                    |          |          |--2.64%-- 0x7fbf4d03725d
                    |          |          |          0x7fbf8b969c8e
                    |          |          |          TMR3TimerQueuesDo
                    |          |          |          0x7fbf8b974b09
                    |          |          |          0x7fbf8b975af3
                    |          |          |          0x7fbf8b90c215
                    |          |          |          0x7fbf8b975d5c
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |           --1.19%-- 0x7fbf4d0364ef
                    |          |                     0x7fbf4d037325
                    |          |                     0x7fbf8b969c8e
                    |          |                     TMR3TimerQueuesDo
                    |          |                     0x7fbf8b974b09
                    |          |                     0x7fbf8b975af3
                    |          |                     0x7fbf8b90c215
                    |          |                     0x7fbf8b975d5c
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |          |--11.19%-- PGMR3PhysWriteExternal
                    |          |          |          
                    |          |          |--77.16%-- 0x7fbf4d0611cf
                    |          |          |          0x7fbf4d0630a3
                    |          |          |          0x7fbf4d069da9
                    |          |          |          0x7fbf4d06a6ca
                    |          |          |          0x7fbf8b92d70a
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |           --22.84%-- 0x7fbf4d069b52
                    |          |                     0x7fbf4d06a6ca
                    |          |                     0x7fbf8b92d70a
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |           --1.63%-- PGMR3PhysReadExternal
                    |                     |          
                    |                     |--46.38%-- 0x7fbf4d060faf
                    |                     |          0x7fbf4d06a70f
                    |                     |          0x7fbf8b92d70a
                    |                     |          0x7fbfa2e02a7c
                    |                     |          0x7fbfa2e63c7c
                    |                     |          start_thread
                    |                     |          
                    |                     |--28.95%-- 0x7fbf4d061145
                    |                     |          0x7fbf4d0630a3
                    |                     |          0x7fbf4d069da9
                    |                     |          0x7fbf4d06a6ca
                    |                     |          0x7fbf8b92d70a
                    |                     |          0x7fbfa2e02a7c
                    |                     |          0x7fbfa2e63c7c
                    |                     |          start_thread
                    |                     |          
                    |                      --24.67%-- 0x7fbf4d06a437
                    |                                0x7fbf8b92d70a
                    |                                0x7fbfa2e02a7c
                    |                                0x7fbfa2e63c7c
                    |                                start_thread
                    |          
                    |--7.54%-- PGMPhysWrite
                    |          |          
                    |          |--94.98%-- 0x7fbf8b99b60d
                    |          |          
                    |           --5.02%-- 0x7fbf4d036321
                    |                     0x7fbf4d037325
                    |                     0x7fbf8b969c8e
                    |                     TMR3TimerQueuesDo
                    |                     |          
                    |                     |--77.79%-- 0x7fbf8b974b09
                    |                     |          0x7fbf8b975af3
                    |                     |          0x7fbf8b90c215
                    |                     |          0x7fbf8b975d5c
                    |                     |          0x7fbfa2e02a7c
                    |                     |          0x7fbfa2e63c7c
                    |                     |          start_thread
                    |                     |          
                    |                      --22.21%-- 0x7fbf8b90ac17
                    |                                0x7fbf8b90b5af
                    |                                0x7fbf8b975d5c
                    |                                0x7fbfa2e02a7c
                    |                                0x7fbfa2e63c7c
                    |                                start_thread
                    |          
                    |--4.51%-- TMR3TimerQueuesDo
                    |          |          
                    |          |--96.30%-- 0x7fbf8b974b09
                    |          |          0x7fbf8b975af3
                    |          |          0x7fbf8b90c215
                    |          |          0x7fbf8b975d5c
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |           --3.70%-- 0x7fbf8b90ac17
                    |                     0x7fbf8b90eb7b
                    |                     0x7fbf8b90b95f
                    |                     0x7fbf8b975d5c
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                    |          
                    |--3.99%-- 0x7fbf8b9edfc1
                    |          PGMPhysWrite
                    |          0x7fbf8b99b60d
                    |          
                    |--3.04%-- 0x7fbf8ba1176d
                    |          0x7fbf8b99b474
                    |          
                    |--2.85%-- 0x7fbf4cd6c25c
                    |          0x7fbf8b9edfc1
                    |          PGMPhysWrite
                    |          0x7fbf8b99b60d
                    |          
                    |--2.57%-- PDMGetInterrupt
                    |          TRPMR3InjectEvent
                    |          0x7fbf8b90b1ca
                    |          0x7fbf8b90b5af
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--2.43%-- 0x7fbf8ba06051
                    |          0x7fbf8ba0638d
                    |          0x7fbf8b9a0ec9
                    |          
                    |--1.40%-- 0x7fbf8b974b09
                    |          0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--0.91%-- 0x7fbf4d0609a4
                    |          0x7fbf4d06510b
                    |          0x7fbf4d069bdd
                    |          0x7fbf4d06a6ca
                    |          0x7fbf8b92d70a
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--0.90%-- PGMR3PhysWriteExternal
                    |          |          
                    |          |--79.46%-- 0x7fbf4d0611cf
                    |          |          0x7fbf4d0630a3
                    |          |          0x7fbf4d069da9
                    |          |          0x7fbf4d06a6ca
                    |          |          0x7fbf8b92d70a
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |           --20.54%-- 0x7fbf4d06047c
                    |                     0x7fbf4d0650d6
                    |                     0x7fbf4d069bdd
                    |                     0x7fbf4d06a6ca
                    |                     0x7fbf8b92d70a
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                    |          
                    |--0.88%-- TRPMR3InjectEvent
                    |          0x7fbf8b90b1ca
                    |          0x7fbf8b90b5af
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--0.75%-- 0x7fbf4d06a40b
                    |          0x7fbf8b92d70a
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--0.68%-- 0x7fbf8b924ac6
                    |          0x7fbf4cd6c6f1
                    |          0x7fbf8b9edfc1
                    |          PGMPhysWrite
                    |          0x7fbf8b99b60d
                    |          
                    |--0.59%-- 0x7fbf8b99b60d
                    |          
                    |--0.53%-- 0x7fbf8b9220b9
                    |          |          
                    |          |--80.84%-- 0x7fbf8b9692c3
                    |          |          TMR3TimerQueuesDo
                    |          |          0x7fbf8b974b09
                    |          |          0x7fbf8b975af3
                    |          |          0x7fbf8b90c215
                    |          |          0x7fbf8b975d5c
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |           --19.16%-- 0x7fbf4cfdf492
                    |                     0x7fbf8b9692c3
                    |                     TMR3TimerQueuesDo
                    |                     0x7fbf8b974b09
                    |                     0x7fbf8b975af3
                    |                     0x7fbf8b90c215
                    |                     0x7fbf8b975d5c
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                     --3.60%-- [...]

     0.12%    btrfs-cleaner  [kernel.kallsyms]                       [k] __mutex_unlock_slowpath                                                                                                                                                                                                                                            
              |
              --- __mutex_unlock_slowpath
                 |          
                 |--93.15%-- mutex_unlock
                 |          |          
                 |          |--51.00%-- btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |          |--48.69%-- btrfs_delalloc_reserve_metadata
                 |          |          btrfs_delalloc_reserve_space
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |           --0.31%-- [...]
                 |          
                 |--6.28%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --0.57%-- btrfs_delalloc_reserve_metadata
                            btrfs_delalloc_reserve_space
                            btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.11%    btrfs-endio-4  [kernel.kallsyms]                       [k] zlib_inflate                                                                                                                                                                                                                                                       
              |
              --- zlib_inflate
                  zlib_decompress_biovec
                  end_compressed_bio_read
                  bio_endio
                  end_workqueue_fn
                  worker_loop
                  kthread
                  ret_from_fork

     0.11%    btrfs-cleaner  [kernel.kallsyms]                       [k] cache_state                                                                                                                                                                                                                                                        
              |
              --- cache_state
                 |          
                 |--54.23%-- __set_extent_bit
                 |          |          
                 |          |--99.39%-- lock_extent_bits
                 |          |          |          
                 |          |          |--52.13%-- lock_extent
                 |          |          |          btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |          |          
                 |          |           --47.87%-- btrfs_defrag_file
                 |          |                     btrfs_run_defrag_inodes
                 |          |                     cleaner_kthread
                 |          |                     kthread
                 |          |                     ret_from_fork
                 |          |          
                 |           --0.61%-- set_extent_defrag
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                 |--42.88%-- lock_extent_bits
                 |          |          
                 |          |--99.23%-- lock_extent
                 |          |          btrfs_defrag_file
                 |          |          btrfs_run_defrag_inodes
                 |          |          cleaner_kthread
                 |          |          kthread
                 |          |          ret_from_fork
                 |          |          
                 |           --0.77%-- btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                  --2.89%-- set_extent_defrag
                            btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.11%       VirtualBox  libc-2.18.so                            [.] __memcpy_sse2_unaligned                                                                                                                                                                                                                                            
                 |
                 --- __memcpy_sse2_unaligned
                    |          
                    |--71.92%-- 0x7fbf84881048
                    |          0x7fbf8b976c5b
                    |          0x7fbf8b977c7c
                    |          0x7fbf8b90aadd
                    |          |          
                    |          |--97.20%-- 0x7fbf8b90b5af
                    |          |          0x7fbf8b975d5c
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |           --2.80%-- 0x7fbf8b90eb7b
                    |                     0x7fbf8b90b95f
                    |                     0x7fbf8b975d5c
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                    |          
                    |--14.57%-- 0x7fbf4d0611cf
                    |          0x7fbf4d0630a3
                    |          0x7fbf4d069da9
                    |          0x7fbf4d06a6ca
                    |          0x7fbf8b92d70a
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--5.43%-- 0x7fbf8b9a1075
                    |          
                    |--1.81%-- 0x7fbf4d03721a
                    |          0x7fbf8b969c8e
                    |          TMR3TimerQueuesDo
                    |          0x7fbf8b974b09
                    |          0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--0.78%-- 0x7fbf4d03735d
                    |          0x7fbf8b969c8e
                    |          TMR3TimerQueuesDo
                    |          0x7fbf8b974b09
                    |          0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--0.65%-- VBoxNsxpXPTC_InvokeByIndex
                    |          0x7fbf904a396d
                     --4.84%-- [...]

     0.11%    btrfs-cleaner  [kernel.kallsyms]                       [k] _cond_resched                                                                                                                                                                                                                                                      
              |
              --- _cond_resched
                  lock_extent_bits
                 |          
                 |--97.00%-- lock_extent
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --3.00%-- btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.11%    btrfs-endio-5  [kernel.kallsyms]                       [k] inflate_fast                                                                                                                                                                                                                                                       
              |
              --- inflate_fast
                  zlib_inflate
                  zlib_decompress_biovec
                  end_compressed_bio_read
                  bio_endio
                  end_workqueue_fn
                  worker_loop
                  kthread
                  ret_from_fork

     0.10%       VirtualBox  VBoxVMM.so                              [.] PDMCritSectLeave                                                                                                                                                                                                                                                   
                 |
                 --- PDMCritSectLeave
                    |          
                    |--81.75%-- 0x7fbf8ba09467
                    |          |          
                    |          |--63.99%-- PGMPhysRead
                    |          |          |          
                    |          |          |--72.11%-- 0x7fbf4d03721a
                    |          |          |          0x7fbf8b969c8e
                    |          |          |          TMR3TimerQueuesDo
                    |          |          |          |          
                    |          |          |          |--96.52%-- 0x7fbf8b974b09
                    |          |          |          |          0x7fbf8b975af3
                    |          |          |          |          0x7fbf8b90c215
                    |          |          |          |          0x7fbf8b975d5c
                    |          |          |          |          0x7fbfa2e02a7c
                    |          |          |          |          0x7fbfa2e63c7c
                    |          |          |          |          start_thread
                    |          |          |          |          
                    |          |          |           --3.48%-- 0x7fbf8b90ac17
                    |          |          |                     |          
                    |          |          |                     |--78.06%-- 0x7fbf8b90b5af
                    |          |          |                     |          0x7fbf8b975d5c
                    |          |          |                     |          0x7fbfa2e02a7c
                    |          |          |                     |          0x7fbfa2e63c7c
                    |          |          |                     |          start_thread
                    |          |          |                     |          
                    |          |          |                      --21.94%-- 0x7fbf8b90eb7b
                    |          |          |                                0x7fbf8b90b95f
                    |          |          |                                0x7fbf8b975d5c
                    |          |          |                                0x7fbfa2e02a7c
                    |          |          |                                0x7fbfa2e63c7c
                    |          |          |                                start_thread
                    |          |          |          
                    |          |          |--15.26%-- 0x7fbf4d03735d
                    |          |          |          0x7fbf8b969c8e
                    |          |          |          TMR3TimerQueuesDo
                    |          |          |          |          
                    |          |          |          |--97.81%-- 0x7fbf8b974b09
                    |          |          |          |          0x7fbf8b975af3
                    |          |          |          |          0x7fbf8b90c215
                    |          |          |          |          0x7fbf8b975d5c
                    |          |          |          |          0x7fbfa2e02a7c
                    |          |          |          |          0x7fbfa2e63c7c
                    |          |          |          |          start_thread
                    |          |          |          |          
                    |          |          |           --2.19%-- 0x7fbf8b90ac17
                    |          |          |                     |          
                    |          |          |                     |--61.79%-- 0x7fbf8b90b5af
                    |          |          |                     |          0x7fbf8b975d5c
                    |          |          |                     |          0x7fbfa2e02a7c
                    |          |          |                     |          0x7fbfa2e63c7c
                    |          |          |                     |          start_thread
                    |          |          |                     |          
                    |          |          |                      --38.21%-- 0x7fbf8b90eb7b
                    |          |          |                                0x7fbf8b90b95f
                    |          |          |                                0x7fbf8b975d5c
                    |          |          |                                0x7fbfa2e02a7c
                    |          |          |                                0x7fbfa2e63c7c
                    |          |          |                                start_thread
                    |          |          |          
                    |          |          |--7.70%-- 0x7fbf8b9a1075
                    |          |          |          
                    |          |          |--2.61%-- 0x7fbf4d03725d
                    |          |          |          0x7fbf8b969c8e
                    |          |          |          TMR3TimerQueuesDo
                    |          |          |          0x7fbf8b974b09
                    |          |          |          0x7fbf8b975af3
                    |          |          |          0x7fbf8b90c215
                    |          |          |          0x7fbf8b975d5c
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |          |--1.80%-- 0x7fbf4d036545
                    |          |          |          0x7fbf4d037325
                    |          |          |          0x7fbf8b969c8e
                    |          |          |          TMR3TimerQueuesDo
                    |          |          |          0x7fbf8b974b09
                    |          |          |          0x7fbf8b975af3
                    |          |          |          0x7fbf8b90c215
                    |          |          |          0x7fbf8b975d5c
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |           --0.52%-- [...]
                    |          |          
                    |          |--17.32%-- 0x7fbf8ba0e112
                    |          |          |          
                    |          |          |--48.92%-- 0x7fbf8ba06051
                    |          |          |          0x7fbf8ba0638d
                    |          |          |          |          
                    |          |          |          |--63.41%-- 0x7fbf8b9a0ec9
                    |          |          |          |          
                    |          |          |           --36.59%-- 0x7fbf8b99e9ba
                    |          |          |          
                    |          |          |--30.51%-- 0x7fbf8ba0609d
                    |          |          |          0x7fbf8ba0638d
                    |          |          |          |          
                    |          |          |          |--53.94%-- 0x7fbf8b99e9ba
                    |          |          |          |          
                    |          |          |           --46.06%-- 0x7fbf8b9a0ec9
                    |          |          |          
                    |          |           --20.58%-- 0x7fbf8ba060fa
                    |          |                     0x7fbf8ba0638d
                    |          |                     0x7fbf8b99e9ba
                    |          |          
                    |          |--10.38%-- PGMPhysWrite
                    |          |          |          
                    |          |          |--98.82%-- 0x7fbf8b99b60d
                    |          |          |          
                    |          |           --1.18%-- 0x7fbf4d036321
                    |          |                     0x7fbf4d037325
                    |          |                     0x7fbf8b969c8e
                    |          |                     TMR3TimerQueuesDo
                    |          |                     0x7fbf8b974b09
                    |          |                     0x7fbf8b975af3
                    |          |                     0x7fbf8b90c215
                    |          |                     0x7fbf8b975d5c
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |          |--3.97%-- PGMR3PhysWriteExternal
                    |          |          |          
                    |          |          |--83.31%-- 0x7fbf4d0611cf
                    |          |          |          0x7fbf4d0630a3
                    |          |          |          0x7fbf4d069da9
                    |          |          |          0x7fbf4d06a6ca
                    |          |          |          0x7fbf8b92d70a
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |          |--9.64%-- 0x7fbf4d069b52
                    |          |          |          0x7fbf4d06a6ca
                    |          |          |          0x7fbf8b92d70a
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |           --7.05%-- 0x7fbf4d06047c
                    |          |                     0x7fbf4d0650d6
                    |          |                     0x7fbf4d069bdd
                    |          |                     0x7fbf4d06a6ca
                    |          |                     0x7fbf8b92d70a
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |          |--3.51%-- 0x7fbf8ba118c7
                    |          |          0x7fbf8b99b474
                    |          |          
                    |           --0.84%-- PGMR3PhysReadExternal
                    |                     |          
                    |                     |--51.20%-- 0x7fbf4d06a40b
                    |                     |          0x7fbf8b92d70a
                    |                     |          0x7fbfa2e02a7c
                    |                     |          0x7fbfa2e63c7c
                    |                     |          start_thread
                    |                     |          
                    |                     |--43.70%-- 0x7fbf4d06a437
                    |                     |          0x7fbf8b92d70a
                    |                     |          0x7fbfa2e02a7c
                    |                     |          0x7fbfa2e63c7c
                    |                     |          start_thread
                    |                     |          
                    |                      --5.10%-- 0x7fbf4d06a474
                    |                                0x7fbf8b92d70a
                    |                                0x7fbfa2e02a7c
                    |                                0x7fbfa2e63c7c
                    |                                start_thread
                    |          
                    |--2.42%-- TMR3TimerQueuesDo
                    |          0x7fbf8b974b09
                    |          0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--2.27%-- 0x7fbf8b974b09
                    |          0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--1.98%-- PDMGetInterrupt
                    |          TRPMR3InjectEvent
                    |          0x7fbf8b90b1ca
                    |          0x7fbf8b90b5af
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--1.80%-- 0x7fbf4cd6c1ca
                    |          0x7fbf8b9edfc1
                    |          PGMPhysWrite
                    |          0x7fbf8b99b60d
                    |          
                    |--1.38%-- 0x7fbf8b9edfc1
                    |          PGMPhysWrite
                    |          0x7fbf8b99b60d
                    |          
                    |--1.29%-- 0x7fbf4cd6c4a8
                    |          0x7fbf8b9edfc1
                    |          PGMPhysWrite
                    |          0x7fbf8b99b60d
                    |          
                    |--0.82%-- 0x7fbf8ba0e112
                    |          |          
                    |          |--83.35%-- 0x7fbf8ba06051
                    |          |          0x7fbf8ba0638d
                    |          |          |          
                    |          |          |--81.06%-- 0x7fbf8b9a0ec9
                    |          |          |          
                    |          |           --18.94%-- 0x7fbf8b99e9ba
                    |          |          
                    |           --16.65%-- 0x7fbf8ba060fa
                    |                     0x7fbf8ba0638d
                    |                     0x7fbf8b99e9ba
                    |          
                    |--0.63%-- 0x7fbf8b9edfe2
                    |          PGMPhysWrite
                    |          0x7fbf8b99b60d
                    |          
                    |--0.59%-- 0x7fbf4cfdf492
                    |          0x7fbf8b9692c3
                    |          TMR3TimerQueuesDo
                    |          0x7fbf8b974b09
                    |          0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--0.57%-- TMTimerSetRelative
                    |          0x7fbf8b97b4e2
                    |          0x7fbf8b975b20
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--0.54%-- 0x7fbf4d0361e2
                    |          0x7fbf4d037325
                    |          0x7fbf8b969c8e
                    |          TMR3TimerQueuesDo
                    |          0x7fbf8b974b09
                    |          0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                     --3.97%-- [...]

     0.10%    btrfs-endio-6  [kernel.kallsyms]                       [k] zlib_inflate_table                                                                                                                                                                                                                                                 
              |
              --- zlib_inflate_table
                  zlib_inflate
                  zlib_decompress_biovec
                  end_compressed_bio_read
                  bio_endio
                  end_workqueue_fn
                  worker_loop
                  kthread
                  ret_from_fork

     0.10%    btrfs-endio-7  [kernel.kallsyms]                       [k] zlib_inflate_table                                                                                                                                                                                                                                                 
              |
              --- zlib_inflate_table
                  zlib_inflate
                  zlib_decompress_biovec
                  end_compressed_bio_read
                  bio_endio
                  end_workqueue_fn
                  worker_loop
                  kthread
                  ret_from_fork

     0.09%    btrfs-cleaner  [kernel.kallsyms]                       [k] calc_csum_metadata_size                                                                                                                                                                                                                                            
              |
              --- calc_csum_metadata_size
                 |          
                 |--56.18%-- btrfs_delalloc_reserve_metadata
                 |          btrfs_delalloc_reserve_space
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--38.78%-- btrfs_delalloc_release_metadata
                 |          btrfs_clear_bit_hook
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                 |--2.73%-- btrfs_clear_bit_hook
                 |          clear_state_bit
                 |          clear_extent_bit
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --2.31%-- btrfs_delalloc_reserve_space
                            btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.09%       VirtualBox  [kernel.kallsyms]                       [k] find_busiest_group                                                                                                                                                                                                                                                 
                 |
                 --- find_busiest_group
                    |          
                    |--98.25%-- load_balance
                    |          idle_balance
                    |          __schedule
                    |          schedule
                    |          |          
                    |          |--59.35%-- schedule_hrtimeout_range_clock
                    |          |          schedule_hrtimeout_range
                    |          |          |          
                    |          |          |--96.56%-- rtR0SemEventMultiLnxWait.isra.2
                    |          |          |          VBoxHost_RTSemEventMultiWaitEx
                    |          |          |          __GI___ioctl
                    |          |          |          SUPR3CallVMMR0Ex
                    |          |          |          0x7fbf8b974bfb
                    |          |          |          0x7fbf8b975af3
                    |          |          |          0x7fbf8b90c215
                    |          |          |          0x7fbf8b975d5c
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |           --3.44%-- poll_schedule_timeout
                    |          |                     do_sys_poll
                    |          |                     sys_poll
                    |          |                     system_call_fastpath
                    |          |                     __GI___libc_poll
                    |          |          
                    |          |--21.64%-- rtR0SemEventLnxWait.isra.2
                    |          |          VBoxHost_RTSemEventWaitEx
                    |          |          supR0SemEventWaitEx
                    |          |          SUPSemEventWaitNoResume
                    |          |          |          
                    |          |          |--97.34%-- supdrvIOCtl
                    |          |          |          VBoxDrvLinuxIOCtl_4_3_4
                    |          |          |          do_vfs_ioctl
                    |          |          |          sys_ioctl
                    |          |          |          system_call_fastpath
                    |          |          |          __GI___ioctl
                    |          |          |          SUPSemEventWaitNoResume
                    |          |          |          |          
                    |          |          |          |--84.94%-- 0x7fbf8b9f0872
                    |          |          |          |          |          
                    |          |          |          |          |--55.89%-- 0x7fbf8ba0e0bb
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--41.78%-- 0x7fbf8ba06051
                    |          |          |          |          |          |          0x7fbf8ba0638d
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |          |--83.34%-- 0x7fbf8b99e9ba
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |           --16.66%-- 0x7fbf8b9a0ec9
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--29.51%-- 0x7fbf8ba0609d
                    |          |          |          |          |          |          0x7fbf8ba0638d
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |          |--74.36%-- 0x7fbf8b99e9ba
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |           --25.64%-- 0x7fbf8b9a0ec9
                    |          |          |          |          |          |          
                    |          |          |          |          |           --28.70%-- 0x7fbf8ba060fa
                    |          |          |          |          |                     0x7fbf8ba0638d
                    |          |          |          |          |                     0x7fbf8b99e9ba
                    |          |          |          |          |          
                    |          |          |          |          |--14.04%-- 0x7fbf8ba1176d
                    |          |          |          |          |          0x7fbf8b99b474
                    |          |          |          |          |          
                    |          |          |          |          |--12.26%-- PGMPhysWrite
                    |          |          |          |          |          0x7fbf8b99b60d
                    |          |          |          |          |          
                    |          |          |          |          |--6.86%-- PGMPhysRead
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--84.49%-- 0x7fbf8b9a1075
                    |          |          |          |          |          |          
                    |          |          |          |          |           --15.51%-- 0x7fbf4d03721a
                    |          |          |          |          |                     0x7fbf8b969c8e
                    |          |          |          |          |                     TMR3TimerQueuesDo
                    |          |          |          |          |                     0x7fbf8b974b09
                    |          |          |          |          |                     0x7fbf8b975af3
                    |          |          |          |          |                     0x7fbf8b90c215
                    |          |          |          |          |                     0x7fbf8b975d5c
                    |          |          |          |          |                     0x7fbfa2e02a7c
                    |          |          |          |          |                     0x7fbfa2e63c7c
                    |          |          |          |          |                     start_thread
                    |          |          |          |          |          
                    |          |          |          |          |--6.29%-- PDMGetInterrupt
                    |          |          |          |          |          TRPMR3InjectEvent
                    |          |          |          |          |          0x7fbf8b90b1ca
                    |          |          |          |          |          0x7fbf8b90b5af
                    |          |          |          |          |          0x7fbf8b975d5c
                    |          |          |          |          |          0x7fbfa2e02a7c
                    |          |          |          |          |          0x7fbfa2e63c7c
                    |          |          |          |          |          start_thread
                    |          |          |          |          |          
                    |          |          |          |          |--2.42%-- PGMR3PhysWriteExternal
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--54.81%-- 0x7fbf4d06047c
                    |          |          |          |          |          |          0x7fbf4d061dd7
                    |          |          |          |          |          |          0x7fbf4d069cf4
                    |          |          |          |          |          |          0x7fbf4d06a725
                    |          |          |          |          |          |          0x7fbf8b92d70a
                    |          |          |          |          |          |          0x7fbfa2e02a7c
                    |          |          |          |          |          |          0x7fbfa2e63c7c
                    |          |          |          |          |          |          start_thread
                    |          |          |          |          |          |          
                    |          |          |          |          |           --45.19%-- 0x7fbf4d0611cf
                    |          |          |          |          |                     0x7fbf4d0630a3
                    |          |          |          |          |                     0x7fbf4d069da9
                    |          |          |          |          |                     0x7fbf4d06a6ca
                    |          |          |          |          |                     0x7fbf8b92d70a
                    |          |          |          |          |                     0x7fbfa2e02a7c
                    |          |          |          |          |                     0x7fbfa2e63c7c
                    |          |          |          |          |                     start_thread
                    |          |          |          |          |          
                    |          |          |          |          |--1.97%-- 0x7fbf4cd6c25c
                    |          |          |          |          |          0x7fbf8b9edfc1
                    |          |          |          |          |          PGMPhysWrite
                    |          |          |          |          |          0x7fbf8b99b60d
                    |          |          |          |           --0.27%-- [...]
                    |          |          |          |          
                    |          |          |           --15.06%-- 0x7fbf4d06a7bc
                    |          |          |                     0x7fbf8b92d70a
                    |          |          |                     0x7fbfa2e02a7c
                    |          |          |                     0x7fbfa2e63c7c
                    |          |          |                     start_thread
                    |          |          |          
                    |          |           --2.66%-- __GI___ioctl
                    |          |                     0x7fbf8b97b602
                    |          |                     0x7fbf8b90eb04
                    |          |                     0x7fbf8b90b95f
                    |          |                     0x7fbf8b975d5c
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |          |--10.18%-- schedule_timeout
                    |          |          |          
                    |          |          |--76.20%-- schedule_timeout_interruptible
                    |          |          |          do_sigtimedwait
                    |          |          |          sys_rt_sigtimedwait
                    |          |          |          system_call_fastpath
                    |          |          |          do_sigwaitinfo
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |           --23.80%-- __down
                    |          |                     down
                    |          |                     VBoxHost_RTSemFastMutexRequest
                    |          |                     __GI___ioctl
                    |          |                     SUPR3CallVMMR0Ex
                    |          |                     0x7fbf8b974bfb
                    |          |                     0x7fbf8b975af3
                    |          |                     0x7fbf8b90c215
                    |          |                     0x7fbf8b975d5c
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |          |--5.43%-- schedule_preempt_disabled
                    |          |          __mutex_lock_slowpath
                    |          |          mutex_lock
                    |          |          |          
                    |          |          |--98.80%-- btrfs_file_llseek
                    |          |          |          vfs_llseek
                    |          |          |          sys_lseek
                    |          |          |          system_call_fastpath
                    |          |          |          0x7fbfa36bb06d
                    |          |          |          |          
                    |          |          |          |--84.52%-- RTFileReadAt
                    |          |          |          |          0x7fbf9003a58b
                    |          |          |          |          0x7fbf90068193
                    |          |          |          |          0x7fbf90036f28
                    |          |          |          |          0x7fbf90036959
                    |          |          |          |          0x7fbf90038c78
                    |          |          |          |          0x7fbf9003920e
                    |          |          |          |          0x7fbf9003947e
                    |          |          |          |          0x7fbf90039499
                    |          |          |          |          0x7fbf900397bb
                    |          |          |          |          VDRead
                    |          |          |          |          0x7fbf4d06a85e
                    |          |          |          |          0x7fbf8b92d70a
                    |          |          |          |          0x7fbfa2e02a7c
                    |          |          |          |          0x7fbfa2e63c7c
                    |          |          |          |          start_thread
                    |          |          |          |          
                    |          |          |           --15.48%-- RTFileWriteAt
                    |          |          |                     0x7fbf90037af3
                    |          |          |                     0x7fbf9006a5cd
                    |          |          |                     0x7fbf900399c9
                    |          |          |                     0x7fbf90036959
                    |          |          |                     0x7fbf90038c78
                    |          |          |                     0x7fbf9003920e
                    |          |          |                     0x7fbf9003947e
                    |          |          |                     0x7fbf90039499
                    |          |          |                     0x7fbf9003965d
                    |          |          |                     VDWrite
                    |          |          |                     0x7fbf4d022764
                    |          |          |                     0x7fbf4d06a6ad
                    |          |          |                     0x7fbf8b92d70a
                    |          |          |                     0x7fbfa2e02a7c
                    |          |          |                     0x7fbfa2e63c7c
                    |          |          |                     start_thread
                    |          |          |          
                    |          |           --1.20%-- btrfs_file_aio_write
                    |          |                     do_sync_write
                    |          |                     vfs_write
                    |          |                     sys_write
                    |          |                     system_call_fastpath
                    |          |                     0x7fbfa36baa1d
                    |          |                     0x7fbf90037af3
                    |          |                     0x7fbf9006a5cd
                    |          |                     0x7fbf900399c9
                    |          |                     0x7fbf90036959
                    |          |                     0x7fbf90038c78
                    |          |                     0x7fbf9003920e
                    |          |                     0x7fbf9003947e
                    |          |                     0x7fbf90039499
                    |          |                     0x7fbf9003965d
                    |          |                     VDWrite
                    |          |                     0x7fbf4d022764
                    |          |                     0x7fbf4d06a6ad
                    |          |                     0x7fbf8b92d70a
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |          |--1.60%-- futex_wait_queue_me
                    |          |          futex_wait
                    |          |          do_futex
                    |          |          sys_futex
                    |          |          system_call_fastpath
                    |          |          |          
                    |          |          |--82.22%-- pthread_cond_timedwait@@GLIBC_2.3.2
                    |          |          |          |          
                    |          |          |          |--27.04%-- 0x8a1
                    |          |          |          |          
                    |          |          |          |--23.04%-- 0xc78
                    |          |          |          |          
                    |          |          |          |--18.85%-- 0x864
                    |          |          |          |          
                    |          |          |          |--16.81%-- 0x7fbfa2e3a3fc
                    |          |          |          |          0x7fbfa2e02a7c
                    |          |          |          |          0x7fbfa2e63c7c
                    |          |          |          |          start_thread
                    |          |          |          |          
                    |          |          |           --14.26%-- 0xc0d
                    |          |          |          
                    |          |           --17.78%-- pthread_cond_wait@@GLIBC_2.3.2
                    |          |                     RTSemEventMultiWaitEx
                    |          |                     0x7fbf84911b56
                    |          |                     0x7fbf84911fba
                    |          |                     0x7fbf84912d4c
                    |          |                     0x7fbf84911622
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |          |--1.01%-- io_schedule
                    |          |          |          
                    |          |          |--55.66%-- sleep_on_page_killable
                    |          |          |          __wait_on_bit_lock
                    |          |          |          __lock_page_killable
                    |          |          |          generic_file_aio_read
                    |          |          |          do_sync_read
                    |          |          |          vfs_read
                    |          |          |          sys_read
                    |          |          |          system_call_fastpath
                    |          |          |          0x7fbfa36baa7d
                    |          |          |          0x7fbf9003a58b
                    |          |          |          0x7fbf90068193
                    |          |          |          0x7fbf90036f28
                    |          |          |          0x7fbf90036959
                    |          |          |          0x7fbf90038c78
                    |          |          |          0x7fbf9003920e
                    |          |          |          0x7fbf9003947e
                    |          |          |          0x7fbf90039499
                    |          |          |          0x7fbf900397bb
                    |          |          |          VDRead
                    |          |          |          0x7fbf4d06a85e
                    |          |          |          0x7fbf8b92d70a
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |           --44.34%-- sleep_on_page
                    |          |                     __wait_on_bit
                    |          |                     wait_on_page_bit
                    |          |                     read_extent_buffer_pages
                    |          |                     btree_read_extent_buffer_pages.constprop.54
                    |          |                     read_tree_block
                    |          |                     read_block_for_search.isra.34
                    |          |                     btrfs_search_slot
                    |          |                     |          
                    |          |                     |--71.85%-- btrfs_lookup_csum
                    |          |                     |          __btrfs_lookup_bio_sums.isra.9
                    |          |                     |          btrfs_lookup_bio_sums
                    |          |                     |          |          
                    |          |                     |          |--64.18%-- btrfs_submit_compressed_read
                    |          |                     |          |          btrfs_submit_bio_hook
                    |          |                     |          |          submit_one_bio
                    |          |                     |          |          extent_readpages
                    |          |                     |          |          btrfs_readpages
                    |          |                     |          |          __do_page_cache_readahead
                    |          |                     |          |          ondemand_readahead
                    |          |                     |          |          page_cache_sync_readahead
                    |          |                     |          |          generic_file_aio_read
                    |          |                     |          |          do_sync_read
                    |          |                     |          |          vfs_read
                    |          |                     |          |          sys_read
                    |          |                     |          |          system_call_fastpath
                    |          |                     |          |          0x7fbfa36baa7d
                    |          |                     |          |          0x7fbf9003a58b
                    |          |                     |          |          0x7fbf90068193
                    |          |                     |          |          0x7fbf90036f28
                    |          |                     |          |          0x7fbf90036959
                    |          |                     |          |          0x7fbf90038c78
                    |          |                     |          |          0x7fbf9003920e
                    |          |                     |          |          0x7fbf9003947e
                    |          |                     |          |          0x7fbf90039499
                    |          |                     |          |          0x7fbf900397bb
                    |          |                     |          |          VDRead
                    |          |                     |          |          0x7fbf4d06a85e
                    |          |                     |          |          0x7fbf8b92d70a
                    |          |                     |          |          0x7fbfa2e02a7c
                    |          |                     |          |          0x7fbfa2e63c7c
                    |          |                     |          |          start_thread
                    |          |                     |          |          
                    |          |                     |           --35.82%-- btrfs_submit_bio_hook
                    |          |                     |                     submit_one_bio
                    |          |                     |                     extent_readpages
                    |          |                     |                     btrfs_readpages
                    |          |                     |                     __do_page_cache_readahead
                    |          |                     |                     ondemand_readahead
                    |          |                     |                     page_cache_sync_readahead
                    |          |                     |                     generic_file_aio_read
                    |          |                     |                     do_sync_read
                    |          |                     |                     vfs_read
                    |          |                     |                     sys_read
                    |          |                     |                     system_call_fastpath
                    |          |                     |                     0x7fbfa36baa7d
                    |          |                     |                     0x7fbf9003a58b
                    |          |                     |                     0x7fbf90068193
                    |          |                     |                     0x7fbf90036f28
                    |          |                     |                     0x7fbf90036959
                    |          |                     |                     0x7fbf90038c78
                    |          |                     |                     0x7fbf9003920e
                    |          |                     |                     0x7fbf9003947e
                    |          |                     |                     0x7fbf90039499
                    |          |                     |                     0x7fbf900397bb
                    |          |                     |                     VDRead
                    |          |                     |                     0x7fbf4d06a85e
                    |          |                     |                     0x7fbf8b92d70a
                    |          |                     |                     0x7fbfa2e02a7c
                    |          |                     |                     0x7fbfa2e63c7c
                    |          |                     |                     start_thread
                    |          |                     |          
                    |          |                      --28.15%-- btrfs_lookup_file_extent
                    |          |                                btrfs_get_extent
                    |          |                                __do_readpage
                    |          |                                __extent_readpages.constprop.44
                    |          |                                extent_readpages
                    |          |                                btrfs_readpages
                    |          |                                __do_page_cache_readahead
                    |          |                                ondemand_readahead
                    |          |                                page_cache_sync_readahead
                    |          |                                generic_file_aio_read
                    |          |                                do_sync_read
                    |          |                                vfs_read
                    |          |                                sys_read
                    |          |                                system_call_fastpath
                    |          |                                0x7fbfa36baa7d
                    |          |                                0x7fbf9003a58b
                    |          |                                0x7fbf90068193
                    |          |                                0x7fbf90036f28
                    |          |                                0x7fbf90036959
                    |          |                                0x7fbf90038c78
                    |          |                                0x7fbf9003920e
                    |          |                                0x7fbf9003947e
                    |          |                                0x7fbf90039499
                    |          |                                0x7fbf900397bb
                    |          |                                VDRead
                    |          |                                0x7fbf4d06a85e
                    |          |                                0x7fbf8b92d70a
                    |          |                                0x7fbfa2e02a7c
                    |          |                                0x7fbfa2e63c7c
                    |          |                                start_thread
                    |          |          
                    |           --0.78%-- do_nanosleep
                    |                     hrtimer_nanosleep
                    |                     sys_nanosleep
                    |                     system_call_fastpath
                    |                     0x7fbfa36bb12d
                    |                     0x7fbf8ba2c2ea
                    |                     0x7fbf8b92d81a
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                    |          
                     --1.75%-- idle_balance
                               __schedule
                               schedule
                               |          
                               |--70.99%-- schedule_hrtimeout_range_clock
                               |          schedule_hrtimeout_range
                               |          rtR0SemEventMultiLnxWait.isra.2
                               |          VBoxHost_RTSemEventMultiWaitEx
                               |          __GI___ioctl
                               |          SUPR3CallVMMR0Ex
                               |          0x7fbf8b974bfb
                               |          0x7fbf8b975af3
                               |          0x7fbf8b90c215
                               |          0x7fbf8b975d5c
                               |          0x7fbfa2e02a7c
                               |          0x7fbfa2e63c7c
                               |          start_thread
                               |          
                               |--19.98%-- schedule_timeout
                               |          schedule_timeout_interruptible
                               |          do_sigtimedwait
                               |          sys_rt_sigtimedwait
                               |          system_call_fastpath
                               |          do_sigwaitinfo
                               |          0x7fbfa2e02a7c
                               |          0x7fbfa2e63c7c
                               |          start_thread
                               |          
                                --9.03%-- io_schedule
                                          sleep_on_page_killable
                                          __wait_on_bit_lock
                                          __lock_page_killable
                                          generic_file_aio_read
                                          do_sync_read
                                          vfs_read
                                          sys_read
                                          system_call_fastpath
                                          0x7fbfa36baa7d
                                          0x7fbf9003a58b
                                          0x7fbf90068193
                                          0x7fbf90036f28
                                          0x7fbf90036959
                                          0x7fbf90038c78
                                          0x7fbf9003920e
                                          0x7fbf9003947e
                                          0x7fbf90039499
                                          0x7fbf900397bb
                                          VDRead
                                          0x7fbf4d06a85e
                                          0x7fbf8b92d70a
                                          0x7fbfa2e02a7c
                                          0x7fbfa2e63c7c
                                          start_thread

     0.09%    btrfs-cleaner  [kernel.kallsyms]                       [k] btrfs_set_bit_hook                                                                                                                                                                                                                                                 
              |
              --- btrfs_set_bit_hook
                 |          
                 |--90.22%-- __set_extent_bit
                 |          |          
                 |          |--97.76%-- lock_extent_bits
                 |          |          |          
                 |          |          |--97.69%-- lock_extent
                 |          |          |          btrfs_defrag_file
                 |          |          |          btrfs_run_defrag_inodes
                 |          |          |          cleaner_kthread
                 |          |          |          kthread
                 |          |          |          ret_from_fork
                 |          |          |          
                 |          |           --2.31%-- btrfs_defrag_file
                 |          |                     btrfs_run_defrag_inodes
                 |          |                     cleaner_kthread
                 |          |                     kthread
                 |          |                     ret_from_fork
                 |          |          
                 |           --2.24%-- set_extent_defrag
                 |                     btrfs_defrag_file
                 |                     btrfs_run_defrag_inodes
                 |                     cleaner_kthread
                 |                     kthread
                 |                     ret_from_fork
                 |          
                  --9.78%-- set_state_bits
                            __set_extent_bit
                            set_extent_defrag
                            btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.08%    btrfs-endio-6  [kernel.kallsyms]                       [k] zlib_inflate                                                                                                                                                                                                                                                       
              |
              --- zlib_inflate
                  zlib_decompress_biovec
                  end_compressed_bio_read
                  bio_endio
                  end_workqueue_fn
                  worker_loop
                  kthread
                  ret_from_fork

     0.08%    btrfs-cleaner  [kernel.kallsyms]                       [k] btrfs_check_data_free_space                                                                                                                                                                                                                                        
              |
              --- btrfs_check_data_free_space
                 |          
                 |--96.03%-- btrfs_delalloc_reserve_space
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --3.97%-- btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.08%    btrfs-cleaner  [kernel.kallsyms]                       [k] radix_tree_lookup_slot                                                                                                                                                                                                                                             
              |
              --- radix_tree_lookup_slot
                 |          
                 |--74.45%-- find_lock_page
                 |          find_or_create_page
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --25.55%-- find_get_page
                            find_lock_page
                            find_or_create_page
                            btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.08%    btrfs-endio-7  [kernel.kallsyms]                       [k] zlib_inflate                                                                                                                                                                                                                                                       
              |
              --- zlib_inflate
                  zlib_decompress_biovec
                  end_compressed_bio_read
                  bio_endio
                  end_workqueue_fn
                  worker_loop
                  kthread
                  ret_from_fork

     0.08%       VirtualBox  VBoxRT.so                               [.] RTTimeNanoTSLFenceSync                                                                                                                                                                                                                                             
                 |
                 --- RTTimeNanoTSLFenceSync
                    |          
                    |--25.69%-- 0x7fbf8ba2074c
                    |          |          
                    |          |--44.94%-- 0x7fbf8ba1d565
                    |          |          0x7fbf8b90eb5b
                    |          |          0x7fbf8b90b95f
                    |          |          0x7fbf8b975d5c
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |          |--24.87%-- 0x7fbf8ba1d988
                    |          |          0x7fbf8b974b84
                    |          |          0x7fbf8b975af3
                    |          |          0x7fbf8b90c215
                    |          |          0x7fbf8b975d5c
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |          |--20.66%-- 0x7fbf8b969034
                    |          |          TMR3TimerQueuesDo
                    |          |          |          
                    |          |          |--96.91%-- 0x7fbf8b974b09
                    |          |          |          0x7fbf8b975af3
                    |          |          |          0x7fbf8b90c215
                    |          |          |          0x7fbf8b975d5c
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |           --3.09%-- 0x7fbf8b90ac17
                    |          |                     0x7fbf8b90b5af
                    |          |                     0x7fbf8b975d5c
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |          |--8.33%-- 0x7fbf8b969e15
                    |          |          0x7fbfa2e645eb
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |           --1.21%-- 0x7fbf8b96912f
                    |                     TMR3TimerQueuesDo
                    |                     0x7fbf8b974b09
                    |                     0x7fbf8b975af3
                    |                     0x7fbf8b90c215
                    |                     0x7fbf8b975d5c
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                    |          
                    |--13.83%-- 0x7fbf8b974c03
                    |          0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--10.21%-- 0x7fbf8b974b0e
                    |          0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--7.35%-- 0x7fbf8b974afe
                    |          0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--7.20%-- RTTimeMilliTS
                    |          |          
                    |          |--37.84%-- 0x7fbf8b969bc1
                    |          |          TMR3TimerQueuesDo
                    |          |          |          
                    |          |          |--96.51%-- 0x7fbf8b974b09
                    |          |          |          0x7fbf8b975af3
                    |          |          |          0x7fbf8b90c215
                    |          |          |          0x7fbf8b975d5c
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |           --3.49%-- 0x7fbf8b90ac17
                    |          |                     0x7fbf8b90b5af
                    |          |                     0x7fbf8b975d5c
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |          |--34.13%-- 0x7fbf4d06a3b2
                    |          |          0x7fbf8b92d70a
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |          |--13.97%-- TMTimerSetRelative
                    |          |          |          
                    |          |          |--78.98%-- 0x7fbf8b97b4e2
                    |          |          |          0x7fbf8b975b20
                    |          |          |          0x7fbf8b90c215
                    |          |          |          0x7fbf8b975d5c
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |           --21.02%-- 0x7fbf4cfce75a
                    |          |                     0x7fbf8b969c8e
                    |          |                     TMR3TimerQueuesDo
                    |          |                     0x7fbf8b974b09
                    |          |                     0x7fbf8b975af3
                    |          |                     0x7fbf8b90c215
                    |          |                     0x7fbf8b975d5c
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |          |--5.94%-- 0x7fbf4d069a4f
                    |          |          |          
                    |          |          |--85.45%-- 0x7fbf4d06a6ca
                    |          |          |          0x7fbf8b92d70a
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |           --14.55%-- 0x7fbf4d06a725
                    |          |                     0x7fbf8b92d70a
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |          |--4.56%-- 0x7fbf8b969e5b
                    |          |          0x7fbfa2e645eb
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |           --3.56%-- 0x7fbf8b97b41c
                    |                     0x7fbf8b975b98
                    |                     0x7fbf8b90c215
                    |                     0x7fbf8b975d5c
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                    |          
                    |--5.08%-- 0x7fbf8b97b4a3
                    |          0x7fbf8b974bbe
                    |          0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--4.76%-- 0x7fbf8b974bde
                    |          0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--4.11%-- 0x7fbf8ba20656
                    |          |          
                    |          |--65.84%-- 0x7fbf8b969d41
                    |          |          TMR3TimerQueuesDo
                    |          |          |          
                    |          |          |--91.49%-- 0x7fbf8b974b09
                    |          |          |          0x7fbf8b975af3
                    |          |          |          0x7fbf8b90c215
                    |          |          |          0x7fbf8b975d5c
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |           --8.51%-- 0x7fbf8b90ac17
                    |          |                     0x7fbf8b90b5af
                    |          |                     0x7fbf8b975d5c
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |          |--30.52%-- 0x7fbf4d016d71
                    |          |          0x7fbf8b969c8e
                    |          |          TMR3TimerQueuesDo
                    |          |          0x7fbf8b974b09
                    |          |          0x7fbf8b975af3
                    |          |          0x7fbf8b90c215
                    |          |          0x7fbf8b975d5c
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |           --3.64%-- 0x7fbf4d0361ac
                    |                     0x7fbf4d037325
                    |                     0x7fbf8b969c8e
                    |                     TMR3TimerQueuesDo
                    |                     0x7fbf8b974b09
                    |                     0x7fbf8b975af3
                    |                     0x7fbf8b90c215
                    |                     0x7fbf8b975d5c
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                    |          
                    |--3.95%-- 0x7fbf8ba1cc33
                    |          0x7fbf8b975a93
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--3.26%-- 0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--3.02%-- 0x7fbf8ba1cc97
                    |          0x7fbf8b975b06
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--2.98%-- 0x7fbf8b975a9c
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--2.59%-- 0x7fbf8ba1d565
                    |          0x7fbf8b90eb5b
                    |          0x7fbf8b90b95f
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--1.80%-- 0x7fbf8b969034
                    |          TMR3TimerQueuesDo
                    |          0x7fbf8b974b09
                    |          0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--1.18%-- 0x7fbf8ba1d988
                    |          0x7fbf8b974b84
                    |          0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--1.10%-- 0x7fbf8b969e15
                    |          0x7fbfa2e645eb
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--0.78%-- 0x7fbf8b975a93
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                     --1.11%-- [...]

     0.08%          swapper  [kernel.kallsyms]                       [k] menu_select                                                                                                                                                                                                                                                        
                    |
                    --- menu_select
                       |          
                       |--95.74%-- cpuidle_idle_call
                       |          arch_cpu_idle
                       |          cpu_startup_entry
                       |          |          
                       |          |--85.23%-- start_secondary
                       |          |          
                       |           --14.77%-- rest_init
                       |                     start_kernel
                       |                     x86_64_start_reservations
                       |                     x86_64_start_kernel
                       |          
                        --4.26%-- arch_cpu_idle
                                  cpu_startup_entry
                                  |          
                                  |--82.69%-- start_secondary
                                  |          
                                   --17.31%-- rest_init
                                             start_kernel
                                             x86_64_start_reservations
                                             x86_64_start_kernel

     0.07%       VirtualBox  [kernel.kallsyms]                       [k] _raw_spin_lock_irqsave                                                                                                                                                                                                                                             
                 |
                 --- _raw_spin_lock_irqsave
                    |          
                    |--25.35%-- VBoxHost_RTSpinlockAcquire
                    |          |          
                    |          |--50.64%-- VBoxHost_RTHandleTableLookupWithCtx
                    |          |          |          
                    |          |          |--54.02%-- supR0SemEventWaitEx
                    |          |          |          SUPSemEventWaitNoResume
                    |          |          |          |          
                    |          |          |          |--92.04%-- supdrvIOCtl
                    |          |          |          |          VBoxDrvLinuxIOCtl_4_3_4
                    |          |          |          |          do_vfs_ioctl
                    |          |          |          |          sys_ioctl
                    |          |          |          |          system_call_fastpath
                    |          |          |          |          __GI___ioctl
                    |          |          |          |          SUPSemEventWaitNoResume
                    |          |          |          |          0x7fbf8b9f0872
                    |          |          |          |          |          
                    |          |          |          |          |--38.97%-- 0x7fbf8ba0e0bb
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--58.10%-- 0x7fbf8ba06051
                    |          |          |          |          |          |          0x7fbf8ba0638d
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |          |--67.73%-- 0x7fbf8b9a0ec9
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |           --32.27%-- 0x7fbf8b99e9ba
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--21.95%-- 0x7fbf8ba060fa
                    |          |          |          |          |          |          0x7fbf8ba0638d
                    |          |          |          |          |          |          0x7fbf8b99e9ba
                    |          |          |          |          |          |          
                    |          |          |          |          |           --19.94%-- 0x7fbf8ba0609d
                    |          |          |          |          |                     0x7fbf8ba0638d
                    |          |          |          |          |                     |          
                    |          |          |          |          |                     |--60.76%-- 0x7fbf8b99e9ba
                    |          |          |          |          |                     |          
                    |          |          |          |          |                      --39.24%-- 0x7fbf8b9a0ec9
                    |          |          |          |          |          
                    |          |          |          |          |--28.25%-- PDMGetInterrupt
                    |          |          |          |          |          TRPMR3InjectEvent
                    |          |          |          |          |          0x7fbf8b90b1ca
                    |          |          |          |          |          0x7fbf8b90b5af
                    |          |          |          |          |          0x7fbf8b975d5c
                    |          |          |          |          |          0x7fbfa2e02a7c
                    |          |          |          |          |          0x7fbfa2e63c7c
                    |          |          |          |          |          start_thread
                    |          |          |          |          |          
                    |          |          |          |          |--22.93%-- PGMPhysRead
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--86.23%-- 0x7fbf8b9a1075
                    |          |          |          |          |          |          
                    |          |          |          |          |           --13.77%-- 0x7fbf4d03721a
                    |          |          |          |          |                     0x7fbf8b969c8e
                    |          |          |          |          |                     TMR3TimerQueuesDo
                    |          |          |          |          |                     0x7fbf8b974b09
                    |          |          |          |          |                     0x7fbf8b975af3
                    |          |          |          |          |                     0x7fbf8b90c215
                    |          |          |          |          |                     0x7fbf8b975d5c
                    |          |          |          |          |                     0x7fbfa2e02a7c
                    |          |          |          |          |                     0x7fbfa2e63c7c
                    |          |          |          |          |                     start_thread
                    |          |          |          |          |          
                    |          |          |          |          |--8.93%-- 0x7fbf8ba1176d
                    |          |          |          |          |          0x7fbf8b99b474
                    |          |          |          |          |          
                    |          |          |          |           --0.92%-- PGMR3PhysReadExternal
                    |          |          |          |                     0x7fbf4d06a40b
                    |          |          |          |                     0x7fbf8b92d70a
                    |          |          |          |                     0x7fbfa2e02a7c
                    |          |          |          |                     0x7fbfa2e63c7c
                    |          |          |          |                     start_thread
                    |          |          |          |          
                    |          |          |           --7.96%-- __GI___ioctl
                    |          |          |                     0x7fbf8b97b602
                    |          |          |                     0x7fbf8b90eb04
                    |          |          |                     0x7fbf8b90b95f
                    |          |          |                     0x7fbf8b975d5c
                    |          |          |                     0x7fbfa2e02a7c
                    |          |          |                     0x7fbfa2e63c7c
                    |          |          |                     start_thread
                    |          |          |          
                    |          |           --45.98%-- SUPSemEventSignal
                    |          |                     |          
                    |          |                     |--84.43%-- supdrvIOCtl
                    |          |                     |          VBoxDrvLinuxIOCtl_4_3_4
                    |          |                     |          do_vfs_ioctl
                    |          |                     |          sys_ioctl
                    |          |                     |          system_call_fastpath
                    |          |                     |          __GI___ioctl
                    |          |                     |          SUPSemEventSignal
                    |          |                     |          PDMCritSectLeave
                    |          |                     |          |          
                    |          |                     |          |--77.93%-- 0x7fbf8ba09467
                    |          |                     |          |          |          
                    |          |                     |          |          |--47.18%-- PGMPhysRead
                    |          |                     |          |          |          |          
                    |          |                     |          |          |          |--69.11%-- 0x7fbf8b9a1075
                    |          |                     |          |          |          |          
                    |          |                     |          |          |           --30.89%-- 0x7fbf4d03721a
                    |          |                     |          |          |                     0x7fbf8b969c8e
                    |          |                     |          |          |                     TMR3TimerQueuesDo
                    |          |                     |          |          |                     |          
                    |          |                     |          |          |                     |--67.88%-- 0x7fbf8b974b09
                    |          |                     |          |          |                     |          0x7fbf8b975af3
                    |          |                     |          |          |                     |          0x7fbf8b90c215
                    |          |                     |          |          |                     |          0x7fbf8b975d5c
                    |          |                     |          |          |                     |          0x7fbfa2e02a7c
                    |          |                     |          |          |                     |          0x7fbfa2e63c7c
                    |          |                     |          |          |                     |          start_thread
                    |          |                     |          |          |                     |          
                    |          |                     |          |          |                      --32.12%-- 0x7fbf8b90ac17
                    |          |                     |          |          |                                0x7fbf8b90eb7b
                    |          |                     |          |          |                                0x7fbf8b90b95f
                    |          |                     |          |          |                                0x7fbf8b975d5c
                    |          |                     |          |          |                                0x7fbfa2e02a7c
                    |          |                     |          |          |                                0x7fbfa2e63c7c
                    |          |                     |          |          |                                start_thread
                    |          |                     |          |          |          
                    |          |                     |          |          |--44.17%-- 0x7fbf8ba0e112
                    |          |                     |          |          |          |          
                    |          |                     |          |          |          |--68.77%-- 0x7fbf8ba06051
                    |          |                     |          |          |          |          0x7fbf8ba0638d
                    |          |                     |          |          |          |          |          
                    |          |                     |          |          |          |          |--56.55%-- 0x7fbf8b9a0ec9
                    |          |                     |          |          |          |          |          
                    |          |                     |          |          |          |           --43.45%-- 0x7fbf8b99e9ba
                    |          |                     |          |          |          |          
                    |          |                     |          |          |           --31.23%-- 0x7fbf8ba0609d
                    |          |                     |          |          |                     0x7fbf8ba0638d
                    |          |                     |          |          |                     0x7fbf8b99e9ba
                    |          |                     |          |          |          
                    |          |                     |          |           --8.65%-- PGMPhysWrite
                    |          |                     |          |                     0x7fbf8b99b60d
                    |          |                     |          |          
                    |          |                     |          |--15.77%-- PDMGetInterrupt
                    |          |                     |          |          TRPMR3InjectEvent
                    |          |                     |          |          0x7fbf8b90b1ca
                    |          |                     |          |          0x7fbf8b90b5af
                    |          |                     |          |          0x7fbf8b975d5c
                    |          |                     |          |          0x7fbfa2e02a7c
                    |          |                     |          |          0x7fbfa2e63c7c
                    |          |                     |          |          start_thread
                    |          |                     |          |          
                    |          |                     |           --6.30%-- 0x7fbf4cd6c1ca
                    |          |                     |                     0x7fbf8b9edfc1
                    |          |                     |                     PGMPhysWrite
                    |          |                     |                     0x7fbf8b99b60d
                    |          |                     |          
                    |          |                      --15.57%-- __GI___ioctl
                    |          |                                0x7fbf8b97b602
                    |          |                                0x7fbf8b90eb04
                    |          |                                0x7fbf8b90b95f
                    |          |                                0x7fbf8b975d5c
                    |          |                                0x7fbfa2e02a7c
                    |          |                                0x7fbfa2e63c7c
                    |          |                                start_thread
                    |          |          
                    |          |--35.22%-- SUPR0ObjRelease
                    |          |          |          
                    |          |          |--55.58%-- supR0SemEventWaitEx
                    |          |          |          SUPSemEventWaitNoResume
                    |          |          |          supdrvIOCtl
                    |          |          |          VBoxDrvLinuxIOCtl_4_3_4
                    |          |          |          do_vfs_ioctl
                    |          |          |          sys_ioctl
                    |          |          |          system_call_fastpath
                    |          |          |          __GI___ioctl
                    |          |          |          SUPSemEventWaitNoResume
                    |          |          |          |          
                    |          |          |          |--98.13%-- 0x7fbf8b9f0872
                    |          |          |          |          |          
                    |          |          |          |          |--32.43%-- PGMPhysRead
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--87.79%-- 0x7fbf8b9a1075
                    |          |          |          |          |          |          
                    |          |          |          |          |           --12.21%-- 0x7fbf4d03721a
                    |          |          |          |          |                     0x7fbf8b969c8e
                    |          |          |          |          |                     TMR3TimerQueuesDo
                    |          |          |          |          |                     0x7fbf8b974b09
                    |          |          |          |          |                     0x7fbf8b975af3
                    |          |          |          |          |                     0x7fbf8b90c215
                    |          |          |          |          |                     0x7fbf8b975d5c
                    |          |          |          |          |                     0x7fbfa2e02a7c
                    |          |          |          |          |                     0x7fbfa2e63c7c
                    |          |          |          |          |                     start_thread
                    |          |          |          |          |          
                    |          |          |          |          |--29.46%-- 0x7fbf8ba0e0bb
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--56.05%-- 0x7fbf8ba060fa
                    |          |          |          |          |          |          0x7fbf8ba0638d
                    |          |          |          |          |          |          0x7fbf8b99e9ba
                    |          |          |          |          |          |          
                    |          |          |          |          |           --43.95%-- 0x7fbf8ba06051
                    |          |          |          |          |                     0x7fbf8ba0638d
                    |          |          |          |          |                     |          
                    |          |          |          |          |                     |--71.45%-- 0x7fbf8b9a0ec9
                    |          |          |          |          |                     |          
                    |          |          |          |          |                      --28.55%-- 0x7fbf8b99e9ba
                    |          |          |          |          |          
                    |          |          |          |          |--20.85%-- PDMGetInterrupt
                    |          |          |          |          |          TRPMR3InjectEvent
                    |          |          |          |          |          0x7fbf8b90b1ca
                    |          |          |          |          |          0x7fbf8b90b5af
                    |          |          |          |          |          0x7fbf8b975d5c
                    |          |          |          |          |          0x7fbfa2e02a7c
                    |          |          |          |          |          0x7fbfa2e63c7c
                    |          |          |          |          |          start_thread
                    |          |          |          |          |          
                    |          |          |          |          |--8.98%-- 0x7fbf8ba1176d
                    |          |          |          |          |          0x7fbf8b99b474
                    |          |          |          |          |          
                    |          |          |          |          |--5.63%-- 0x7fbf4cd6c25c
                    |          |          |          |          |          0x7fbf8b9edfc1
                    |          |          |          |          |          PGMPhysWrite
                    |          |          |          |          |          0x7fbf8b99b60d
                    |          |          |          |          |          
                    |          |          |          |           --2.65%-- PGMPhysWrite
                    |          |          |          |                     0x7fbf8b99b60d
                    |          |          |          |          
                    |          |          |           --1.87%-- 0x7fbf4d06a7bc
                    |          |          |                     0x7fbf8b92d70a
                    |          |          |                     0x7fbfa2e02a7c
                    |          |          |                     0x7fbfa2e63c7c
                    |          |          |                     start_thread
                    |          |          |          
                    |          |           --44.42%-- SUPSemEventSignal
                    |          |                     supdrvIOCtl
                    |          |                     VBoxDrvLinuxIOCtl_4_3_4
                    |          |                     do_vfs_ioctl
                    |          |                     sys_ioctl
                    |          |                     system_call_fastpath
                    |          |                     __GI___ioctl
                    |          |                     SUPSemEventSignal
                    |          |                     PDMCritSectLeave
                    |          |                     |          
                    |          |                     |--93.18%-- 0x7fbf8ba09467
                    |          |                     |          |          
                    |          |                     |          |--32.98%-- PGMPhysWrite
                    |          |                     |          |          0x7fbf8b99b60d
                    |          |                     |          |          
                    |          |                     |          |--27.63%-- PGMPhysRead
                    |          |                     |          |          0x7fbf8b9a1075
                    |          |                     |          |          
                    |          |                     |          |--21.75%-- 0x7fbf8ba0e112
                    |          |                     |          |          0x7fbf8ba0609d
                    |          |                     |          |          0x7fbf8ba0638d
                    |          |                     |          |          0x7fbf8b9a0ec9
                    |          |                     |          |          
                    |          |                     |          |--9.89%-- PGMR3PhysReadExternal
                    |          |                     |          |          0x7fbf4d060faf
                    |          |                     |          |          0x7fbf4d06a70f
                    |          |                     |          |          0x7fbf8b92d70a
                    |          |                     |          |          0x7fbfa2e02a7c
                    |          |                     |          |          0x7fbfa2e63c7c
                    |          |                     |          |          start_thread
                    |          |                     |          |          
                    |          |                     |           --7.76%-- PGMR3PhysWriteExternal
                    |          |                     |                     0x7fbf4d069b52
                    |          |                     |                     0x7fbf4d06a6ca
                    |          |                     |                     0x7fbf8b92d70a
                    |          |                     |                     0x7fbfa2e02a7c
                    |          |                     |                     0x7fbfa2e63c7c
                    |          |                     |                     start_thread
                    |          |                     |          
                    |          |                      --6.82%-- PDMGetInterrupt
                    |          |                                TRPMR3InjectEvent
                    |          |                                0x7fbf8b90b1ca
                    |          |                                0x7fbf8b90b5af
                    |          |                                0x7fbf8b975d5c
                    |          |                                0x7fbfa2e02a7c
                    |          |                                0x7fbfa2e63c7c
                    |          |                                start_thread
                    |          |          
                    |           --14.14%-- SUPR0ObjAddRefEx
                    |                     supdrvSessionObjHandleRetain
                    |                     VBoxHost_RTHandleTableLookupWithCtx
                    |                     |          
                    |                     |--50.45%-- supR0SemEventWaitEx
                    |                     |          SUPSemEventWaitNoResume
                    |                     |          supdrvIOCtl
                    |                     |          VBoxDrvLinuxIOCtl_4_3_4
                    |                     |          do_vfs_ioctl
                    |                     |          sys_ioctl
                    |                     |          system_call_fastpath
                    |                     |          __GI___ioctl
                    |                     |          SUPSemEventWaitNoResume
                    |                     |          |          
                    |                     |          |--79.98%-- 0x7fbf8b9f0872
                    |                     |          |          |          
                    |                     |          |          |--40.56%-- 0x7fbf8ba0e0bb
                    |                     |          |          |          0x7fbf8ba06051
                    |                     |          |          |          0x7fbf8ba0638d
                    |                     |          |          |          |          
                    |                     |          |          |          |--67.43%-- 0x7fbf8b99e9ba
                    |                     |          |          |          |          
                    |                     |          |          |           --32.57%-- 0x7fbf8b9a0ec9
                    |                     |          |          |          
                    |                     |          |          |--29.26%-- 0x7fbf8ba1176d
                    |                     |          |          |          0x7fbf8b99b474
                    |                     |          |          |          
                    |                     |          |          |--18.59%-- PDMGetInterrupt
                    |                     |          |          |          TRPMR3InjectEvent
                    |                     |          |          |          0x7fbf8b90b1ca
                    |                     |          |          |          0x7fbf8b90b5af
                    |                     |          |          |          0x7fbf8b975d5c
                    |                     |          |          |          0x7fbfa2e02a7c
                    |                     |          |          |          0x7fbfa2e63c7c
                    |                     |          |          |          start_thread
                    |                     |          |          |          
                    |                     |          |           --11.60%-- PGMR3PhysWriteExternal
                    |                     |          |                     0x7fbf4d0611cf
                    |                     |          |                     0x7fbf4d0630a3
                    |                     |          |                     0x7fbf4d069da9
                    |                     |          |                     0x7fbf4d06a6ca
                    |                     |          |                     0x7fbf8b92d70a
                    |                     |          |                     0x7fbfa2e02a7c
                    |                     |          |                     0x7fbfa2e63c7c
                    |                     |          |                     start_thread
                    |                     |          |          
                    |                     |           --20.02%-- 0x7fbf4d06a7bc
                    |                     |                     0x7fbf8b92d70a
                    |                     |                     0x7fbfa2e02a7c
                    |                     |                     0x7fbfa2e63c7c
                    |                     |                     start_thread
                    |                     |          
                    |                      --49.55%-- SUPSemEventSignal
                    |                                |          
                    |                                |--80.86%-- supdrvIOCtl
                    |                                |          VBoxDrvLinuxIOCtl_4_3_4
                    |                                |          do_vfs_ioctl
                    |                                |          sys_ioctl
                    |                                |          system_call_fastpath
                    |                                |          __GI___ioctl
                    |                                |          SUPSemEventSignal
                    |                                |          PDMCritSectLeave
                    |                                |          0x7fbf8ba09467
                    |                                |          |          
                    |                                |          |--31.99%-- 0x7fbf8ba0e112
                    |                                |          |          0x7fbf8ba06051
                    |                                |          |          0x7fbf8ba0638d
                    |                                |          |          0x7fbf8b9a0ec9
                    |                                |          |          
                    |                                |          |--28.52%-- PGMPhysRead
                    |                                |          |          0x7fbf4d03721a
                    |                                |          |          0x7fbf8b969c8e
                    |                                |          |          TMR3TimerQueuesDo
                    |                                |          |          0x7fbf8b974b09
                    |                                |          |          0x7fbf8b975af3
                    |                                |          |          0x7fbf8b90c215
                    |                                |          |          0x7fbf8b975d5c
                    |                                |          |          0x7fbfa2e02a7c
                    |                                |          |          0x7fbfa2e63c7c
                    |                                |          |          start_thread
                    |                                |          |          
                    |                                |          |--21.99%-- PGMR3PhysReadExternal
                    |                                |          |          0x7fbf4d06a474
                    |                                |          |          0x7fbf8b92d70a
                    |                                |          |          0x7fbfa2e02a7c
                    |                                |          |          0x7fbfa2e63c7c
                    |                                |          |          start_thread
                    |                                |          |          
                    |                                |           --17.50%-- PGMPhysWrite
                    |                                |                     0x7fbf8b99b60d
                    |                                |          
                    |                                 --19.14%-- __GI___ioctl
                    |                                           0x7fbf8b97b602
                    |                                           0x7fbf8b90eb04
                    |                                           0x7fbf8b90b95f
                    |                                           0x7fbf8b975d5c
                    |                                           0x7fbfa2e02a7c
                    |                                           0x7fbfa2e63c7c
                    |                                           start_thread
                    |          
                    |--19.78%-- prepare_to_wait
                    |          |          
                    |          |--76.42%-- rtR0SemEventLnxWait.isra.2
                    |          |          VBoxHost_RTSemEventWaitEx
                    |          |          supR0SemEventWaitEx
                    |          |          SUPSemEventWaitNoResume
                    |          |          |          
                    |          |          |--96.09%-- supdrvIOCtl
                    |          |          |          VBoxDrvLinuxIOCtl_4_3_4
                    |          |          |          do_vfs_ioctl
                    |          |          |          sys_ioctl
                    |          |          |          system_call_fastpath
                    |          |          |          __GI___ioctl
                    |          |          |          SUPSemEventWaitNoResume
                    |          |          |          |          
                    |          |          |          |--97.79%-- 0x7fbf8b9f0872
                    |          |          |          |          |          
                    |          |          |          |          |--57.92%-- 0x7fbf8ba0e0bb
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--50.25%-- 0x7fbf8ba0609d
                    |          |          |          |          |          |          0x7fbf8ba0638d
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |          |--53.38%-- 0x7fbf8b99e9ba
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |           --46.62%-- 0x7fbf8b9a0ec9
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--29.40%-- 0x7fbf8ba06051
                    |          |          |          |          |          |          0x7fbf8ba0638d
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |          |--54.81%-- 0x7fbf8b99e9ba
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |           --45.19%-- 0x7fbf8b9a0ec9
                    |          |          |          |          |          |          
                    |          |          |          |          |           --20.34%-- 0x7fbf8ba060fa
                    |          |          |          |          |                     0x7fbf8ba0638d
                    |          |          |          |          |                     0x7fbf8b99e9ba
                    |          |          |          |          |          
                    |          |          |          |          |--15.40%-- 0x7fbf8ba1176d
                    |          |          |          |          |          0x7fbf8b99b474
                    |          |          |          |          |          
                    |          |          |          |          |--11.15%-- PGMPhysRead
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--90.79%-- 0x7fbf8b9a1075
                    |          |          |          |          |          |          
                    |          |          |          |          |           --9.21%-- 0x7fbf4d03721a
                    |          |          |          |          |                     0x7fbf8b969c8e
                    |          |          |          |          |                     TMR3TimerQueuesDo
                    |          |          |          |          |                     0x7fbf8b90ac17
                    |          |          |          |          |                     0x7fbf8b90eb7b
                    |          |          |          |          |                     0x7fbf8b90b95f
                    |          |          |          |          |                     0x7fbf8b975d5c
                    |          |          |          |          |                     0x7fbfa2e02a7c
                    |          |          |          |          |                     0x7fbfa2e63c7c
                    |          |          |          |          |                     start_thread
                    |          |          |          |          |          
                    |          |          |          |          |--9.99%-- PGMPhysWrite
                    |          |          |          |          |          0x7fbf8b99b60d
                    |          |          |          |          |          
                    |          |          |          |          |--2.88%-- PDMGetInterrupt
                    |          |          |          |          |          TRPMR3InjectEvent
                    |          |          |          |          |          0x7fbf8b90b1ca
                    |          |          |          |          |          0x7fbf8b90b5af
                    |          |          |          |          |          0x7fbf8b975d5c
                    |          |          |          |          |          0x7fbfa2e02a7c
                    |          |          |          |          |          0x7fbfa2e63c7c
                    |          |          |          |          |          start_thread
                    |          |          |          |          |          
                    |          |          |          |           --2.66%-- 0x7fbf4cd6c25c
                    |          |          |          |                     0x7fbf8b9edfc1
                    |          |          |          |                     PGMPhysWrite
                    |          |          |          |                     0x7fbf8b99b60d
                    |          |          |          |          
                    |          |          |           --2.21%-- 0x7fbf4d06a7bc
                    |          |          |                     0x7fbf8b92d70a
                    |          |          |                     0x7fbfa2e02a7c
                    |          |          |                     0x7fbfa2e63c7c
                    |          |          |                     start_thread
                    |          |          |          
                    |          |           --3.91%-- __GI___ioctl
                    |          |                     0x7fbf8b97b602
                    |          |                     0x7fbf8b90eb04
                    |          |                     0x7fbf8b90b95f
                    |          |                     0x7fbf8b975d5c
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |           --23.58%-- rtR0SemEventMultiLnxWait.isra.2
                    |                     VBoxHost_RTSemEventMultiWaitEx
                    |                     __GI___ioctl
                    |                     SUPR3CallVMMR0Ex
                    |                     0x7fbf8b974bfb
                    |                     0x7fbf8b975af3
                    |                     0x7fbf8b90c215
                    |                     0x7fbf8b975d5c
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                    |          
                    |--17.75%-- __wake_up
                    |          |          
                    |          |--98.66%-- VBoxHost_RTSemEventSignal
                    |          |          SUPSemEventSignal
                    |          |          |          
                    |          |          |--83.95%-- supdrvIOCtl
                    |          |          |          VBoxDrvLinuxIOCtl_4_3_4
                    |          |          |          do_vfs_ioctl
                    |          |          |          sys_ioctl
                    |          |          |          system_call_fastpath
                    |          |          |          __GI___ioctl
                    |          |          |          SUPSemEventSignal
                    |          |          |          PDMCritSectLeave
                    |          |          |          |          
                    |          |          |          |--68.34%-- 0x7fbf8ba09467
                    |          |          |          |          |          
                    |          |          |          |          |--57.96%-- 0x7fbf8ba0e112
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--58.77%-- 0x7fbf8ba06051
                    |          |          |          |          |          |          0x7fbf8ba0638d
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |          |--90.65%-- 0x7fbf8b99e9ba
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |           --9.35%-- 0x7fbf8b9a0ec9
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--30.03%-- 0x7fbf8ba0609d
                    |          |          |          |          |          |          0x7fbf8ba0638d
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |          |--68.57%-- 0x7fbf8b9a0ec9
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |           --31.43%-- 0x7fbf8b99e9ba
                    |          |          |          |          |          |          
                    |          |          |          |          |           --11.20%-- 0x7fbf8ba060fa
                    |          |          |          |          |                     0x7fbf8ba0638d
                    |          |          |          |          |                     0x7fbf8b99e9ba
                    |          |          |          |          |          
                    |          |          |          |          |--17.14%-- PGMPhysRead
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--90.73%-- 0x7fbf8b9a1075
                    |          |          |          |          |          |          
                    |          |          |          |          |           --9.27%-- 0x7fbf4d03721a
                    |          |          |          |          |                     0x7fbf8b969c8e
                    |          |          |          |          |                     TMR3TimerQueuesDo
                    |          |          |          |          |                     0x7fbf8b90ac17
                    |          |          |          |          |                     0x7fbf8b90eb7b
                    |          |          |          |          |                     0x7fbf8b90b95f
                    |          |          |          |          |                     0x7fbf8b975d5c
                    |          |          |          |          |                     0x7fbfa2e02a7c
                    |          |          |          |          |                     0x7fbfa2e63c7c
                    |          |          |          |          |                     start_thread
                    |          |          |          |          |          
                    |          |          |          |          |--12.56%-- 0x7fbf8ba118c7
                    |          |          |          |          |          0x7fbf8b99b474
                    |          |          |          |          |          
                    |          |          |          |           --12.34%-- PGMPhysWrite
                    |          |          |          |                     0x7fbf8b99b60d
                    |          |          |          |          
                    |          |          |          |--27.60%-- PDMGetInterrupt
                    |          |          |          |          TRPMR3InjectEvent
                    |          |          |          |          0x7fbf8b90b1ca
                    |          |          |          |          0x7fbf8b90b5af
                    |          |          |          |          0x7fbf8b975d5c
                    |          |          |          |          0x7fbfa2e02a7c
                    |          |          |          |          0x7fbfa2e63c7c
                    |          |          |          |          start_thread
                    |          |          |          |          
                    |          |          |           --4.06%-- 0x7fbf4cd6c1ca
                    |          |          |                     0x7fbf8b9edfc1
                    |          |          |                     PGMPhysWrite
                    |          |          |                     0x7fbf8b99b60d
                    |          |          |          
                    |          |           --16.05%-- __GI___ioctl
                    |          |                     0x7fbf8b97b602
                    |          |                     0x7fbf8b90eb04
                    |          |                     0x7fbf8b90b95f
                    |          |                     0x7fbf8b975d5c
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |           --1.34%-- VBoxHost_RTSemEventMultiSignal
                    |                     __GI___ioctl
                    |                     SUPR3CallVMMR0Ex
                    |                     0x7fbf4cd6ba93
                    |                     0x7fbf4cd6bd49
                    |                     0x7fbf4cd6be89
                    |                     0x7fbf4cd6cb12
                    |                     PDMIsaSetIrq
                    |                     0x7fbf8b92211c
                    |                     0x7fbf8b9692c3
                    |                     TMR3TimerQueuesDo
                    |                     0x7fbf8b974b09
                    |                     0x7fbf8b975af3
                    |                     0x7fbf8b90c215
                    |                     0x7fbf8b975d5c
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                    |          
                    |--5.68%-- finish_wait
                    |          |          
                    |          |--79.61%-- rtR0SemEventLnxWait.isra.2
                    |          |          VBoxHost_RTSemEventWaitEx
                    |          |          supR0SemEventWaitEx
                    |          |          SUPSemEventWaitNoResume
                    |          |          |          
                    |          |          |--83.45%-- supdrvIOCtl
                    |          |          |          VBoxDrvLinuxIOCtl_4_3_4
                    |          |          |          do_vfs_ioctl
                    |          |          |          sys_ioctl
                    |          |          |          system_call_fastpath
                    |          |          |          __GI___ioctl
                    |          |          |          SUPSemEventWaitNoResume
                    |          |          |          0x7fbf8b9f0872
                    |          |          |          |          
                    |          |          |          |--42.08%-- 0x7fbf8ba0e0bb
                    |          |          |          |          |          
                    |          |          |          |          |--50.06%-- 0x7fbf8ba0609d
                    |          |          |          |          |          0x7fbf8ba0638d
                    |          |          |          |          |          0x7fbf8b9a0ec9
                    |          |          |          |          |          
                    |          |          |          |          |--30.93%-- 0x7fbf8ba06051
                    |          |          |          |          |          0x7fbf8ba0638d
                    |          |          |          |          |          0x7fbf8b99e9ba
                    |          |          |          |          |          
                    |          |          |          |           --19.01%-- 0x7fbf8ba060fa
                    |          |          |          |                     0x7fbf8ba0638d
                    |          |          |          |                     0x7fbf8b99e9ba
                    |          |          |          |          
                    |          |          |          |--40.17%-- PDMGetInterrupt
                    |          |          |          |          TRPMR3InjectEvent
                    |          |          |          |          0x7fbf8b90b1ca
                    |          |          |          |          0x7fbf8b90b5af
                    |          |          |          |          0x7fbf8b975d5c
                    |          |          |          |          0x7fbfa2e02a7c
                    |          |          |          |          0x7fbfa2e63c7c
                    |          |          |          |          start_thread
                    |          |          |          |          
                    |          |          |          |--7.28%-- 0x7fbf8ba1176d
                    |          |          |          |          0x7fbf8b99b474
                    |          |          |          |          
                    |          |          |          |--6.41%-- PGMPhysRead
                    |          |          |          |          0x7fbf8b9a1075
                    |          |          |          |          
                    |          |          |           --4.07%-- PGMR3PhysWriteExternal
                    |          |          |                     0x7fbf4d0611cf
                    |          |          |                     0x7fbf4d0630a3
                    |          |          |                     0x7fbf4d069da9
                    |          |          |                     0x7fbf4d06a6ca
                    |          |          |                     0x7fbf8b92d70a
                    |          |          |                     0x7fbfa2e02a7c
                    |          |          |                     0x7fbfa2e63c7c
                    |          |          |                     start_thread
                    |          |          |          
                    |          |           --16.55%-- __GI___ioctl
                    |          |                     0x7fbf8b97b602
                    |          |                     0x7fbf8b90eb04
                    |          |                     0x7fbf8b90b95f
                    |          |                     0x7fbf8b975d5c
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |           --20.39%-- rtR0SemEventMultiLnxWait.isra.2
                    |                     VBoxHost_RTSemEventMultiWaitEx
                    |                     __GI___ioctl
                    |                     SUPR3CallVMMR0Ex
                    |                     0x7fbf8b974bfb
                    |                     0x7fbf8b975af3
                    |                     0x7fbf8b90c215
                    |                     0x7fbf8b975d5c
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                    |          
                    |--4.68%-- try_to_wake_up
                    |          |          
                    |          |--96.47%-- default_wake_function
                    |          |          |          
                    |          |          |--93.52%-- autoremove_wake_function
                    |          |          |          __wake_up_common
                    |          |          |          __wake_up
                    |          |          |          |          
                    |          |          |          |--72.58%-- VBoxHost_RTSemEventSignal
                    |          |          |          |          SUPSemEventSignal
                    |          |          |          |          supdrvIOCtl
                    |          |          |          |          VBoxDrvLinuxIOCtl_4_3_4
                    |          |          |          |          do_vfs_ioctl
                    |          |          |          |          sys_ioctl
                    |          |          |          |          system_call_fastpath
                    |          |          |          |          __GI___ioctl
                    |          |          |          |          SUPSemEventSignal
                    |          |          |          |          PDMCritSectLeave
                    |          |          |          |          |          
                    |          |          |          |          |--93.83%-- 0x7fbf8ba09467
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--42.37%-- PGMPhysRead
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |          |--70.33%-- 0x7fbf8b9a1075
                    |          |          |          |          |          |          |          
                    |          |          |          |          |          |           --29.67%-- 0x7fbf4d03735d
                    |          |          |          |          |          |                     0x7fbf8b969c8e
                    |          |          |          |          |          |                     TMR3TimerQueuesDo
                    |          |          |          |          |          |                     0x7fbf8b974b09
                    |          |          |          |          |          |                     0x7fbf8b975af3
                    |          |          |          |          |          |                     0x7fbf8b90c215
                    |          |          |          |          |          |                     0x7fbf8b975d5c
                    |          |          |          |          |          |                     0x7fbfa2e02a7c
                    |          |          |          |          |          |                     0x7fbfa2e63c7c
                    |          |          |          |          |          |                     start_thread
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--24.22%-- 0x7fbf8ba0e112
                    |          |          |          |          |          |          0x7fbf8ba060fa
                    |          |          |          |          |          |          0x7fbf8ba0638d
                    |          |          |          |          |          |          0x7fbf8b99e9ba
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--22.27%-- PGMPhysWrite
                    |          |          |          |          |          |          0x7fbf8b99b60d
                    |          |          |          |          |          |          
                    |          |          |          |          |           --11.14%-- 0x7fbf8ba118c7
                    |          |          |          |          |                     0x7fbf8b99b474
                    |          |          |          |          |          
                    |          |          |          |           --6.17%-- PDMGetInterrupt
                    |          |          |          |                     TRPMR3InjectEvent
                    |          |          |          |                     0x7fbf8b90b1ca
                    |          |          |          |                     0x7fbf8b90b5af
                    |          |          |          |                     0x7fbf8b975d5c
                    |          |          |          |                     0x7fbfa2e02a7c
                    |          |          |          |                     0x7fbfa2e63c7c
                    |          |          |          |                     start_thread
                    |          |          |          |          
                    |          |          |           --27.42%-- VBoxHost_RTSemEventMultiSignal
                    |          |          |                     __GI___ioctl
                    |          |          |                     SUPR3CallVMMR0Ex
                    |          |          |                     |          
                    |          |          |                     |--71.82%-- 0x7fbf4cd6ba93
                    |          |          |                     |          |          
                    |          |          |                     |          |--81.45%-- 0x7fbf4cd6bd49
                    |          |          |                     |          |          0x7fbf4cd6c710
                    |          |          |                     |          |          0x7fbf8b9edfc1
                    |          |          |                     |          |          PGMPhysWrite
                    |          |          |                     |          |          0x7fbf8b99b60d
                    |          |          |                     |          |          
                    |          |          |                     |           --18.55%-- 0x7fbf4cd6bc78
                    |          |          |                     |                     0x7fbf4cd6be89
                    |          |          |                     |                     0x7fbf4cd6cb12
                    |          |          |                     |                     0x7fbf4cd6ccae
                    |          |          |                     |                     0x7fbf8b9f0323
                    |          |          |                     |                     0x7fbf4cfc15c6
                    |          |          |                     |                     0x7fbf8b922395
                    |          |          |                     |                     0x7fbf4d060a78
                    |          |          |                     |                     0x7fbf4d06510b
                    |          |          |                     |                     0x7fbf4d069bdd
                    |          |          |                     |                     0x7fbf4d06a6ca
                    |          |          |                     |                     0x7fbf8b92d70a
                    |          |          |                     |                     0x7fbfa2e02a7c
                    |          |          |                     |                     0x7fbfa2e63c7c
                    |          |          |                     |                     start_thread
                    |          |          |                     |          
                    |          |          |                      --28.18%-- 0x7fbfa2e645eb
                    |          |          |                                0x7fbfa2e02a7c
                    |          |          |                                0x7fbfa2e63c7c
                    |          |          |                                start_thread
                    |          |          |          
                    |          |           --6.48%-- pollwake
                    |          |                     __wake_up_common
                    |          |                     __wake_up_sync_key
                    |          |                     pipe_write
                    |          |                     do_sync_write
                    |          |                     vfs_write
                    |          |                     sys_write
                    |          |                     system_call_fastpath
                    |          |                     0x7fbfa36baa1d
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |                     0x7fbf9c0157d0
                    |          |                     0x14f3e18
                    |          |          
                    |           --3.53%-- wake_up_state
                    |                     wake_futex
                    |                     futex_requeue
                    |                     do_futex
                    |                     sys_futex
                    |                     system_call_fastpath
                    |                     pthread_cond_broadcast@@GLIBC_2.3.2
                    |                     0x0
                    |          
                    |--4.40%-- update_blocked_averages
                    |          idle_balance
                    |          __schedule
                    |          schedule
                    |          |          
                    |          |--50.35%-- rtR0SemEventLnxWait.isra.2
                    |          |          VBoxHost_RTSemEventWaitEx
                    |          |          supR0SemEventWaitEx
                    |          |          SUPSemEventWaitNoResume
                    |          |          supdrvIOCtl
                    |          |          VBoxDrvLinuxIOCtl_4_3_4
                    |          |          do_vfs_ioctl
                    |          |          sys_ioctl
                    |          |          system_call_fastpath
                    |          |          __GI___ioctl
                    |          |          SUPSemEventWaitNoResume
                    |          |          |          
                    |          |          |--84.85%-- 0x7fbf8b9f0872
                    |          |          |          |          
                    |          |          |          |--71.95%-- 0x7fbf8ba0e0bb
                    |          |          |          |          |          
                    |          |          |          |          |--71.84%-- 0x7fbf8ba06051
                    |          |          |          |          |          0x7fbf8ba0638d
                    |          |          |          |          |          |          
                    |          |          |          |          |          |--50.11%-- 0x7fbf8b9a0ec9
                    |          |          |          |          |          |          
                    |          |          |          |          |           --49.89%-- 0x7fbf8b99e9ba
                    |          |          |          |          |          
                    |          |          |          |           --28.16%-- 0x7fbf8ba0609d
                    |          |          |          |                     0x7fbf8ba0638d
                    |          |          |          |                     0x7fbf8b9a0ec9
                    |          |          |          |          
                    |          |          |          |--20.26%-- PDMGetInterrupt
                    |          |          |          |          TRPMR3InjectEvent
                    |          |          |          |          0x7fbf8b90b1ca
                    |          |          |          |          0x7fbf8b90b5af
                    |          |          |          |          0x7fbf8b975d5c
                    |          |          |          |          0x7fbfa2e02a7c
                    |          |          |          |          0x7fbfa2e63c7c
                    |          |          |          |          start_thread
                    |          |          |          |          
                    |          |          |           --7.79%-- PGMPhysRead
                    |          |          |                     0x7fbf8b9a1075
                    |          |          |          
                    |          |           --15.15%-- 0x7fbf4d06a7bc
                    |          |                     0x7fbf8b92d70a
                    |          |                     0x7fbfa2e02a7c
                    |          |                     0x7fbfa2e63c7c
                    |          |                     start_thread
                    |          |          
                    |          |--29.07%-- schedule_hrtimeout_range_clock
                    |          |          schedule_hrtimeout_range
                    |          |          rtR0SemEventMultiLnxWait.isra.2
                    |          |          VBoxHost_RTSemEventMultiWaitEx
                    |          |          __GI___ioctl
                    |          |          SUPR3CallVMMR0Ex
                    |          |          0x7fbf8b974bfb
                    |          |          0x7fbf8b975af3
                    |          |          0x7fbf8b90c215
                    |          |          0x7fbf8b975d5c
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |          |--15.41%-- schedule_timeout
                    |          |          __down
                    |          |          down
                    |          |          VBoxHost_RTSemFastMutexRequest
                    |          |          __GI___ioctl
                    |          |          SUPR3CallVMMR0Ex
                    |          |          0x7fbf8b974bfb
                    |          |          0x7fbf8b975af3
                    |          |          0x7fbf8b90c215
                    |          |          0x7fbf8b975d5c
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |           --5.18%-- do_nanosleep
                    |                     hrtimer_nanosleep
                    |                     sys_nanosleep
                    |                     system_call_fastpath
                    |                     0x7fbfa36bb12d
                    |                     0x7fbf8ba2c2ea
                    |                     0x7fbf8b92d81a
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                    |          
                    |--4.38%-- eventfd_poll
                    |          do_sys_poll
                    |          sys_poll
                    |          system_call_fastpath
                    |          __GI___libc_poll
                    |          
                    |--4.12%-- down
                    |          VBoxHost_RTSemFastMutexRequest
                    |          __GI___ioctl
                    |          SUPR3CallVMMR0Ex
                    |          |          
                    |          |--89.38%-- 0x7fbf8b974bfb
                    |          |          0x7fbf8b975af3
                    |          |          0x7fbf8b90c215
                    |          |          0x7fbf8b975d5c
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |           --10.62%-- 0x7fbf4cd6ba93
                    |                     0x7fbf4cd6bd49
                    |                     0x7fbf4cd6c710
                    |                     0x7fbf8b9edfc1
                    |                     PGMPhysWrite
                    |                     0x7fbf8b99b60d
                    |          
                    |--2.42%-- lock_hrtimer_base.isra.20
                    |          |          
                    |          |--61.63%-- hrtimer_try_to_cancel
                    |          |          schedule_hrtimeout_range_clock
                    |          |          schedule_hrtimeout_range
                    |          |          rtR0SemEventMultiLnxWait.isra.2
                    |          |          VBoxHost_RTSemEventMultiWaitEx
                    |          |          __GI___ioctl
                    |          |          SUPR3CallVMMR0Ex
                    |          |          0x7fbf8b974bfb
                    |          |          0x7fbf8b975af3
                    |          |          0x7fbf8b90c215
                    |          |          0x7fbf8b975d5c
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |           --38.37%-- __hrtimer_start_range_ns
                    |                     hrtimer_start_range_ns
                    |                     schedule_hrtimeout_range_clock
                    |                     schedule_hrtimeout_range
                    |                     rtR0SemEventMultiLnxWait.isra.2
                    |                     VBoxHost_RTSemEventMultiWaitEx
                    |                     __GI___ioctl
                    |                     SUPR3CallVMMR0Ex
                    |                     0x7fbf8b974bfb
                    |                     0x7fbf8b975af3
                    |                     0x7fbf8b90c215
                    |                     0x7fbf8b975d5c
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                    |          
                    |--2.09%-- rtR0SemEventMultiLnxWait.isra.2
                    |          VBoxHost_RTSemEventMultiWaitEx
                    |          __GI___ioctl
                    |          SUPR3CallVMMR0Ex
                    |          0x7fbf8b974bfb
                    |          0x7fbf8b975af3
                    |          0x7fbf8b90c215
                    |          0x7fbf8b975d5c
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                    |          
                    |--1.91%-- up
                    |          VBoxHost_RTSemFastMutexRelease
                    |          __GI___ioctl
                    |          SUPR3CallVMMR0Ex
                    |          |          
                    |          |--55.55%-- 0x7fbf8b974bfb
                    |          |          0x7fbf8b975af3
                    |          |          0x7fbf8b90c215
                    |          |          0x7fbf8b975d5c
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |          |--33.88%-- 0x7fbf4cd6ba93
                    |          |          0x7fbf4cd6bd49
                    |          |          0x7fbf4cd6c710
                    |          |          0x7fbf8b9edfc1
                    |          |          PGMPhysWrite
                    |          |          0x7fbf8b99b60d
                    |          |          
                    |           --10.57%-- 0x7fbf8b9759e7
                    |                     VMR3ReqQueue
                    |                     VMR3ReqCallVU
                    |                     VMR3ReqPriorityCallWaitU
                    |                     0x7fbf848815ca
                    |                     0x7fbf84888cfe
                    |                     VBoxNsxpXPTC_InvokeByIndex
                    |                     0x7fbf904a396d
                    |          
                    |--1.90%-- VBoxHost_RTSemFastMutexRequest
                    |          __GI___ioctl
                    |          SUPR3CallVMMR0Ex
                    |          |          
                    |          |--54.91%-- 0x7fbf8b974bfb
                    |          |          0x7fbf8b975af3
                    |          |          0x7fbf8b90c215
                    |          |          0x7fbf8b975d5c
                    |          |          0x7fbfa2e02a7c
                    |          |          0x7fbfa2e63c7c
                    |          |          start_thread
                    |          |          
                    |          |--40.53%-- 0x7fbf4cd6ba93
                    |          |          0x7fbf4cd6bd49
                    |          |          0x7fbf4cd6c710
                    |          |          0x7fbf8b9edfc1
                    |          |          PGMPhysWrite
                    |          |          0x7fbf8b99b60d
                    |          |          
                    |           --4.56%-- 0x7fbfa2e645eb
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                    |          
                    |--1.07%-- add_wait_queue
                    |          __pollwait
                    |          |          
                    |          |--74.26%-- unix_poll
                    |          |          sock_poll
                    |          |          do_sys_poll
                    |          |          sys_poll
                    |          |          system_call_fastpath
                    |          |          __GI___libc_poll
                    |          |          
                    |           --25.74%-- pipe_poll
                    |                     do_sys_poll
                    |                     sys_poll
                    |                     system_call_fastpath
                    |                     __GI___libc_poll
                    |          
                    |--0.94%-- generic_exec_single
                    |          smp_call_function_single
                    |          VBoxHost_RTMpPokeCpu
                    |          __GI___ioctl
                    |          SUPR3CallVMMR0Ex
                    |          0x7fbf4cd6ba93
                    |          0x7fbf4cd6bd49
                    |          0x7fbf4cd6c710
                    |          0x7fbf8b9edfc1
                    |          PGMPhysWrite
                    |          0x7fbf8b99b60d
                    |          
                    |--0.68%-- VBoxHost_RTSemFastMutexRelease
                    |          __GI___ioctl
                    |          SUPR3CallVMMR0Ex
                    |          |          
                    |          |--67.23%-- 0x7fbf4cd6ba93
                    |          |          |          
                    |          |          |--57.19%-- 0x7fbf4cd6bc78
                    |          |          |          0x7fbf4cd6be89
                    |          |          |          0x7fbf4cd6cb12
                    |          |          |          0x7fbf4cd6ccae
                    |          |          |          0x7fbf8b9f0323
                    |          |          |          0x7fbf4cfc15c6
                    |          |          |          0x7fbf8b922395
                    |          |          |          0x7fbf4d060a78
                    |          |          |          0x7fbf4d06510b
                    |          |          |          0x7fbf4d069bdd
                    |          |          |          0x7fbf4d06a6ca
                    |          |          |          0x7fbf8b92d70a
                    |          |          |          0x7fbfa2e02a7c
                    |          |          |          0x7fbfa2e63c7c
                    |          |          |          start_thread
                    |          |          |          
                    |          |           --42.81%-- 0x7fbf4cd6bd49
                    |          |                     0x7fbf4cd6c710
                    |          |                     0x7fbf8b9edfc1
                    |          |                     PGMPhysWrite
                    |          |                     0x7fbf8b99b60d
                    |          |          
                    |           --32.77%-- 0x7fbf8b974bfb
                    |                     0x7fbf8b975af3
                    |                     0x7fbf8b90c215
                    |                     0x7fbf8b975d5c
                    |                     0x7fbfa2e02a7c
                    |                     0x7fbfa2e63c7c
                    |                     start_thread
                    |          
                    |--0.67%-- do_schedule_next_timer
                    |          dequeue_signal
                    |          do_sigtimedwait
                    |          sys_rt_sigtimedwait
                    |          system_call_fastpath
                    |          do_sigwaitinfo
                    |          0x7fbfa2e02a7c
                    |          0x7fbfa2e63c7c
                    |          start_thread
                     --2.18%-- [...]

     0.06%    btrfs-cleaner  [kernel.kallsyms]                       [k] btrfs_set_page_dirty                                                                                                                                                                                                                                               
              |
              --- btrfs_set_page_dirty
                 |          
                 |--94.99%-- btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --5.01%-- set_page_dirty
                            btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.06%    btrfs-cleaner  [kernel.kallsyms]                       [k] btrfs_delalloc_reserve_metadata                                                                                                                                                                                                                                    
              |
              --- btrfs_delalloc_reserve_metadata
                 |          
                 |--97.71%-- btrfs_delalloc_reserve_space
                 |          btrfs_defrag_file
                 |          btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --2.29%-- btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork

     0.06%    btrfs-endio-4  [kernel.kallsyms]                       [k] __crc32c_le                                                                                                                                                                                                                                                        
              |
              --- __crc32c_le
                  chksum_update
                  crypto_shash_update
                  crc32c
                  btrfs_csum_data
                 |          
                 |--92.65%-- end_compressed_bio_read
                 |          bio_endio
                 |          end_workqueue_fn
                 |          worker_loop
                 |          kthread
                 |          ret_from_fork
                 |          
                  --7.35%-- btrfs_readpage_end_io_hook
                            end_bio_extent_readpage
                            bio_endio
                            end_workqueue_fn
                            worker_loop
                            kthread
                            ret_from_fork

     0.06%    btrfs-cleaner  [kernel.kallsyms]                       [k] lock_extent                                                                                                                                                                                                                                                        
              |
              --- lock_extent
                 |          
                 |--99.42%-- btrfs_run_defrag_inodes
                 |          cleaner_kthread
                 |          kthread
                 |          ret_from_fork
                 |          
                  --0.58%-- btrfs_defrag_file
                            btrfs_run_defrag_inodes
                            cleaner_kthread
                            kthread
                            ret_from_fork