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| author | Jiri Olsa <jolsa@kernel.org> | 2016-04-12 15:29:26 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-04-13 15:11:51 +0200 |
| commit | 99623c628f5425f09b5321cf621af1da29c0c47d (patch) | |
| tree | 504170bab205d25e66b6b7d88ab4f0b38d65d184 /tools/perf/Documentation | |
| parent | perf cpu_map: Add has() method (diff) | |
| download | linux-99623c628f5425f09b5321cf621af1da29c0c47d.tar.xz linux-99623c628f5425f09b5321cf621af1da29c0c47d.zip | |
perf sched: Add compact display option
Add compact map display that does not output the whole cpu matrix, only
cpus that got event.
$ perf sched map --compact
*A0 1082427.094098 secs A0 => perf:19404 (CPU 2)
A0 *. 1082427.094127 secs . => swapper:0 (CPU 1)
A0 . *B0 1082427.094174 secs B0 => rcuos/2:25 (CPU 3)
A0 . *. 1082427.094177 secs
*C0 . . 1082427.094187 secs C0 => migration/2:21
C0 *A0 . 1082427.094193 secs
*. A0 . 1082427.094195 secs
*D0 A0 . 1082427.094402 secs D0 => rngd:968
*. A0 . 1082427.094406 secs
. *E0 . 1082427.095221 secs E0 => kworker/1:1:5333
. E0 *F0 1082427.095227 secs F0 => xterm:3342
It helps to display sane output for small thread loads on big cpu
servers.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1460467771-26532-4-git-send-email-jolsa@kernel.org
[ Add entry in 'perf sched' man page ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-sched.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-sched.txt b/tools/perf/Documentation/perf-sched.txt index 8ff4df956951..89b0c5b7fe84 100644 --- a/tools/perf/Documentation/perf-sched.txt +++ b/tools/perf/Documentation/perf-sched.txt @@ -50,6 +50,13 @@ OPTIONS --dump-raw-trace=:: Display verbose dump of the sched data. +OPTIONS for 'perf sched map' +---------------------------- + +--compact:: + Show only CPUs with activity. Helps visualizing on high core + count systems. + SEE ALSO -------- linkperf:perf-record[1] |