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| author | Namhyung Kim <namhyung@kernel.org> | 2025-05-10 00:04:21 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2025-05-13 23:51:32 +0300 |
| commit | 39922dc53c26842939e5d4d6bfeff8da677a9b33 (patch) | |
| tree | 9b88a7c2ef318801696adb9f334891ddb74e5981 /tools/perf/Documentation | |
| parent | b9228817127430356c929847f111197776201225 (diff) | |
| download | linux-39922dc53c26842939e5d4d6bfeff8da677a9b33.tar.xz | |
perf report: Add 'tgid' sort key
Sometimes we need to analyze the data in process level but current sort
keys only work on thread level. Let's add 'tgid' sort key for that as
'pid' is already taken for thread.
This will look mostly the same, but it only uses tgid instead of tid.
Here's an example of a process with two threads (thloop).
$ perf record -- perf test -w thloop
$ perf report --stdio -s tgid,pid -H
...
#
# Overhead Tgid:Command / Pid:Command
# ........... ..........................
#
100.00% 2018407:perf
50.34% 2018407:perf
49.66% 2018409:perf
Suggested-by: Stephane Eranian <eranian@google.com>
Reviewed-by: Ian Rogers <irogers@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250509210421.197245-1-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-report.txt | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index 3376c4710575..acef3ff4178e 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -94,6 +94,7 @@ OPTIONS - comm: command (name) of the task which can be read via /proc/<pid>/comm - pid: command and tid of the task + - tgid: command and tgid of the task - dso: name of library or module executed at the time of sample - dso_size: size of library or module executed at the time of sample - symbol: name of function executed at the time of sample |