diff options
| author | Namhyung Kim <namhyung@kernel.org> | 2022-07-25 11:31:24 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-07-25 17:58:42 -0300 |
| commit | 1ab55323c5ef379e96ff6b225cd95e80fef4939a (patch) | |
| tree | 67c30468ec62db2ac8b5af35c9e1c4272fefc6a0 /tools/perf/Documentation/perf-lock.txt | |
| parent | 79079f21f50a501f03ee237be6efaa0e533f9f87 (diff) | |
| download | lwn-1ab55323c5ef379e96ff6b225cd95e80fef4939a.tar.gz lwn-1ab55323c5ef379e96ff6b225cd95e80fef4939a.zip | |
perf lock: Support -t option for 'contention' subcommand
Like perf lock report, it can report lock contention stat of each task.
$ perf lock contention -t
contended total wait max wait avg wait pid comm
5 945.20 us 902.08 us 189.04 us 316167 EventManager_De
33 98.17 us 6.78 us 2.97 us 766063 kworker/0:1-get
7 92.47 us 61.26 us 13.21 us 316170 EventManager_De
14 76.31 us 12.87 us 5.45 us 12949 timedcall
24 76.15 us 12.27 us 3.17 us 767992 sched-pipe
15 75.62 us 11.93 us 5.04 us 15127 switchto-defaul
24 71.84 us 5.59 us 2.99 us 629168 kworker/u513:2-
17 67.41 us 7.94 us 3.96 us 13504 coroner-
1 59.56 us 59.56 us 59.56 us 316165 EventManager_De
14 56.21 us 6.89 us 4.01 us 0 swapper
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20220725183124.368304-6-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-lock.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-lock.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-lock.txt b/tools/perf/Documentation/perf-lock.txt index ae78e04346bd..8f4e34f924d5 100644 --- a/tools/perf/Documentation/perf-lock.txt +++ b/tools/perf/Documentation/perf-lock.txt @@ -119,6 +119,10 @@ CONTENTION OPTIONS and users can customize that using this. Possible values: contended, wait_total, wait_max, wait_min, avg_wait. +-t:: +--threads:: + Show per-thread lock contention stat + SEE ALSO -------- |