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| author | Namhyung Kim <namhyung@kernel.org> | 2022-05-02 16:20:15 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-05-10 14:37:55 -0300 |
| commit | cad10ce36671c99dde850de7bd4ca0d8df66c47f (patch) | |
| tree | 74b1089acdbf4e4df98903987a4f538c821ac78e /tools/perf/Documentation | |
| parent | 7df319e5b3b60f159bebf2949f7e28823fff2086 (diff) | |
| download | linux-cad10ce36671c99dde850de7bd4ca0d8df66c47f.tar.bz2 | |
perf annotate: Add --percent-limit option
Like in 'perf report' and 'perf top', Add this option to limit the
number of functions it displays based on the overhead value in percent.
This affects only stdio and stdio2 output modes. Without this, it
shows very long disassembly lines for every function in the data
file. If users don't want this behavior, they can set a value in
percent to suppress that.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20220502232015.697243-1-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-annotate.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-annotate.txt b/tools/perf/Documentation/perf-annotate.txt index 33c2521cba4a..18fcc52809fb 100644 --- a/tools/perf/Documentation/perf-annotate.txt +++ b/tools/perf/Documentation/perf-annotate.txt @@ -147,6 +147,11 @@ include::itrace.txt[] The period/hits keywords set the base the percentage is computed on - the samples period or the number of samples (hits). +--percent-limit:: + Do not show functions which have an overhead under that percent on + stdio or stdio2 (Default: 0). Note that this is about selection of + functions to display, not about lines within the function. + SEE ALSO -------- linkperf:perf-record[1], linkperf:perf-report[1] |