diff options
| author | Namhyung Kim <[email protected]> | 2022-12-09 11:07:25 -0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <[email protected]> | 2022-12-14 11:24:31 -0300 |
| commit | eca949b2b4addd941d369d4c2014b87f3c3e203b (patch) | |
| tree | 722907c1e3f3b8a96b48c83eaed99f4df6621029 /tools/perf/scripts/python/stackcollapse.py | |
| parent | fd507d3e359c7e06d74321cd3d8a5ec8769d05a9 (diff) | |
perf lock contention: Implement -t/--threads option for BPF
The BPF didn't show the per-thread stat properly. Use task's thread id (PID)
as a key instead of stack_id and add a task_data map to save task comm names.
$ sudo ./perf lock con -abt -E 5 sleep 1
contended total wait max wait avg wait pid comm
1 740.66 ms 740.66 ms 740.66 ms 1950 nv_queue
3 305.50 ms 298.19 ms 101.83 ms 1884 nvidia-modeset/
1 25.14 us 25.14 us 25.14 us 2725038 EventManager_De
12 23.09 us 9.30 us 1.92 us 0 swapper
1 20.18 us 20.18 us 20.18 us 2725033 EventManager_De
Signed-off-by: Namhyung Kim <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Blake Jones <[email protected]>
Cc: Ian Rogers <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Song Liu <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions