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authorJiri Olsa <jolsa@kernel.org>2016-04-12 15:29:26 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2016-04-13 10:11:51 -0300
commit99623c628f5425f09b5321cf621af1da29c0c47d (patch)
tree504170bab205d25e66b6b7d88ab4f0b38d65d184 /tools/perf/Documentation/perf-sched.txt
parente632aa69c919462a7f93c8799b97c8a9ddd48fc2 (diff)
downloadlinux-99623c628f5425f09b5321cf621af1da29c0c47d.tar.gz
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/perf-sched.txt')
-rw-r--r--tools/perf/Documentation/perf-sched.txt7
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]