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authorNamhyung Kim <namhyung@kernel.org>2022-08-11 11:54:53 -0700
committerArnaldo Carvalho de Melo <acme@redhat.com>2022-08-11 17:56:47 -0300
commit07fc958b0cfcd8e44f0de13625a551dd16b97eb4 (patch)
tree901859b4c59030cefdb7ecf1cc33604676243aad /tools/perf/scripts/python/export-to-postgresql.py
parent806731a9465b42aaf887cbaf8bfee7eccc9417de (diff)
perf offcpu: Check process id for the given workload
Current task filter checks task->pid which is different for each thread. But we want to profile all the threads in the process. So let's compare process id (or thread-group id: tgid) instead. Before: $ sudo perf record --off-cpu -- perf bench sched messaging -t $ sudo perf report --stat | grep -A1 offcpu offcpu-time stats: SAMPLE events: 2 After: $ sudo perf record --off-cpu -- perf bench sched messaging -t $ sudo perf report --stat | grep -A1 offcpu offcpu-time stats: SAMPLE events: 850 Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Blake Jones <blakejones@google.com> Cc: Hao Luo <haoluo@google.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20220811185456.194721-2-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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