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auditbt.meta
429
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auditbt.stp
622
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auditbt.tcl
79
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chng_cpu.meta
775
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chng_cpu.stp
1.02
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chng_cpu.tcl
140
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cycle_thief.meta
1.06
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cycle_thief.stp
2.83
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cycle_thief.txt
5.83
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errsnoop.meta
575
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errsnoop.stp
1015
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forktracker.meta
525
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forktracker.stp
601
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futexes.meta
520
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futexes.stp
1.09
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futexes.txt
944
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futexes2.meta
593
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futexes2.stp
1.97
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ltrace.meta
314
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ltrace.stp
2.94
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ltrace.tcl
122
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migrate.meta
746
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migrate.stp
1.01
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mutex-contention.meta
479
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mutex-contention.stp
5.43
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mutex-contention.tcl
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noptrace.meta
512
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noptrace.stp
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noptrace.txt
1.18
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pfiles.meta
450
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pfiles.stp
23.14
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plimit.meta
387
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plimit.stp
2.96
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proc_snoop.stp
1.11
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proc_snoop_parser.xml
818
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proc_snoop_parser_instructions...
2.13
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procmod_watcher.meta
657
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procmod_watcher.stp
2.35
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proctop.meta
601
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proctop.stp
4.15
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proctop.txt
8.45
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psig.meta
354
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psig.stp
5.48
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pstrace_exec.meta
545
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pstrace_exec.stp
465
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pstree.meta
455
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pstree.stp
1.91
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rlimit_nofile.meta
319
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rlimit_nofile.stp
1.12
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sched-latency.meta
470
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sched-latency.stp
508
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sched-latency.txt
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schedtimes.meta
814
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schedtimes.stp
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schedtimes.txt
3.2
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semop-watch.meta
267
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semop-watch.stp
795
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sig_by_pid.meta
357
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sig_by_pid.stp
1.04
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sig_by_pid.txt
1.48
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sig_by_proc.meta
364
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sig_by_proc.stp
839
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sig_by_proc.txt
951
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sigkill.meta
560
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sigkill.stp
656
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sigmon.meta
669
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sigmon.stp
932
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sleepingBeauties.meta
581
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sleepingBeauties.stp
1.33
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sleepingBeauties.tcl
140
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sleeptime.meta
601
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sleeptime.stp
1.2
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spawn_seeker.meta
854
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spawn_seeker.stp
1.49
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spawn_seeker.txt
1.29
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strace.meta
385
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strace.stp
2.03
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strace.txt
3.59
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syscalls_by_pid.meta
514
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syscalls_by_pid.stp
623
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syscalls_by_pid.txt
597
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syscalls_by_proc.meta
531
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syscalls_by_proc.stp
677
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syscalls_by_proc.txt
1.1
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syscalltimes
6.14
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syscalltimes.meta
454
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syscalltimes.txt
11.19
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thread-business.meta
346
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thread-business.stp
866
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thread-business.txt
2.76
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threadstacks.meta
585
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threadstacks.stp
1.43
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threadstacks.tcl
79
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wait4time.meta
658
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wait4time.stp
1.32
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Code Editor : cycle_thief.stp
#!/usr/bin/stap # Copyright (C) 2010-2016 Red Hat, Inc. # Write by William Cohen <wcohen@redhat.com> # # cycle_thief provide the following information for the specified pid: # Number of times the task is migrated to another cpu # How long the task is scheduled on and off a processor # Tasks that run when the task is scheduled off the processor # IRQs that run when the task is scheduled on the processor # # Run the script with: # stap cycle_thief.stp -x pid # # control-c to exit data collection global last_cpu = -1 global pid_on, pid_off, migrated global time_on, time_off, irq_entry global cycle_thief, irq_thief, cycle_thief_name probe kernel.trace("sched_switch") { t = gettimeofday_us(); c = cpu(); if ($prev->pid == target() && $next->pid != target()) { /* being switched out */ pid_off = t; last_cpu = c; if (pid_on) time_on <<< pid_off - pid_on; } else if ($prev->pid != target() && $next->pid == target()) { /* being switched in */ pid_on = t; if (pid_off) time_off <<< pid_on - pid_off; if (c != last_cpu) ++migrated; } /* watch what other processes scheduled while pid off */ if (pid_off > pid_on && c == last_cpu) { cycle_thief[$next->pid] <<< 1; cycle_thief_name[$next->pid] = kernel_string($next->comm) } } /* what interrupts occur while process is running */ probe kernel.{trace("irq_handler_entry")!, trace("irq_entry")} { t = gettimeofday_us(); c = cpu(); i = @defined($irq) ? $irq : $id; /* watch what irq run while pid is running */ if (pid_on > pid_off && c == last_cpu) { irq_entry[i] = t; } } probe kernel.{trace("irq_handler_exit")!, trace("irq_exit")} { i = @defined($irq) ? $irq : $id; t = gettimeofday_us(); c = cpu(); irqt=irq_entry[i] /* watch what irq run while pid is running */ if (pid_on > pid_off && c == last_cpu && irqt) { irq_thief[i] <<< t - irqt; delete irq_entry[i]; } } probe end { printf("\n") printf("task %d migrated: %d\n", target(), migrated) if (@count(time_on)) { printf("\n") printf("task %d on processor (us):\n", target()) print(@hist_log(time_on)); } if (@count(time_off)) { printf("\n") printf("task %d off processor (us)\n", target()) print(@hist_log(time_off)); } printf("\n") printf("other pids taking processor from task %d\n", target()) printf("%6s %10s %s\n", "PID", "count", "command"); foreach (p in cycle_thief-) printf("%6d %10d %s\n", p, @count(cycle_thief[p]), cycle_thief_name[p]) printf("\n") printf("irq taking processor from task %d\n", target()) printf("%6s %10s %10s %10s %10s %10s\n", "irq", "count", "min(us)", "avg(us)", "max(us)", "variance(us^2)") foreach (p in irq_thief-) printf("%6d %10d %10d %10d %10d %10d\n", p, @count(irq_thief[p]), @min(irq_thief[p]), @avg(irq_thief[p]), @max(irq_thief[p]), @variance(irq_thief[p])) }
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