When using the perf tool (Linux), is there any simple and convenient way to time durations between two tracepoints?
The obvious use is for syscall sys_enter and sys_exit points like sys_enter_fsync and sys_enter_fsync. But I'm also interested in both dynamic and statically defined tracepoints as supported by perf probe. Think "duration between PostgreSQL's transaction__start and either transaction__commit or transaction__abort".
Ideally a way to use the info in perf timechart and/or aggregate it in perf stat.
Is the only option to use tools like DTrace or SystemTap? Or ebpf maybe? Or am I missing something in perf's docs? How to time between two tracepoints, report durations, etc?
0 Answers