Stuff

exten => 771,1,Set(iterations=$[1000000])
exten => 771,2,Set(time1=${EPOCH})
exten => 771,3,Set(i=$[1])
exten => 771,4,GotoIf($[${i} < ${iterations}]?5:8)
exten => 771,5,NoOp(Hello)
exten => 771,6,Set(i=$[${i} + 1])
exten => 771,7,Goto(4)
exten => 771,8,NoOp(Finish for-workext-49)
exten => 771,9,Set(time2=${EPOCH})
exten => 771,10,Verbose(The time diff is $[${time2} - ${time1} ] seconds)
exten => 771,11,Verbose(Which means that the priorities/sec = $[4*${iterations} / (${time2} - ${time1}) ])
exten => 771,12,SayNumber($[4 * ${iterations} / (${time2} - ${time1}) ])