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| author | Namhyung Kim <namhyung@kernel.org> | 2013-10-30 17:05:55 +0900 |
|---|---|---|
| committer | Jiri Olsa <jolsa@kernel.org> | 2014-06-01 14:35:07 +0200 |
| commit | 1432ec342ece6a7ef78825ae3a9ba1c91686f71d (patch) | |
| tree | 41a82bdc9e732dc6a5e6072cb8e6417dfba467b8 /tools/perf/Documentation | |
| parent | 7c50391f536ea6ed1e75b0f4d90922a2606da3de (diff) | |
| download | talos-obmc-linux-1432ec342ece6a7ef78825ae3a9ba1c91686f71d.tar.gz talos-obmc-linux-1432ec342ece6a7ef78825ae3a9ba1c91686f71d.zip | |
perf top: Add --children option
The --children option is for showing accumulated overhead (period)
value as well as self overhead. It should be used with one of -g or
--call-graph option.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Tested-by: Arun Sharma <asharma@fb.com>
Tested-by: Rodrigo Campos <rodrigo@sdfg.com.ar>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Link: http://lkml.kernel.org/r/1401335910-16832-21-git-send-email-namhyung@kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-top.txt | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt index dcfa54c851e9..180ae02137a5 100644 --- a/tools/perf/Documentation/perf-top.txt +++ b/tools/perf/Documentation/perf-top.txt @@ -119,7 +119,7 @@ Default is to monitor all CPUS. --fields=:: Specify output field - multiple keys can be specified in CSV format. Following fields are available: - overhead, overhead_sys, overhead_us, sample and period. + overhead, overhead_sys, overhead_us, overhead_children, sample and period. Also it can contain any sort key(s). By default, every sort keys not specified in --field will be appended @@ -161,6 +161,12 @@ Default is to monitor all CPUS. Setup and enable call-graph (stack chain/backtrace) recording, implies -g. +--children:: + Accumulate callchain of children to parent entry so that then can + show up in the output. The output will have a new "Children" column + and will be sorted on the data. It requires -g/--call-graph option + enabled. + --max-stack:: Set the stack depth limit when parsing the callchain, anything beyond the specified depth will be ignored. This is a trade-off |
