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authorStanislav Fomichev <stfomichev@yandex-team.ru>2014-07-08 20:03:43 +0400
committerJiri Olsa <jolsa@kernel.org>2014-07-10 00:22:54 +0200
commitd243144af0b52fc5164a0823194f29a5979e236c (patch)
tree85dbbc2db11764cebf06856246884c9b60834dc5 /tools/perf/Documentation/perf-timechart.txt
parent962e310af5dff432745ae7494096ed54b752e63e (diff)
downloadlinux-d243144af0b52fc5164a0823194f29a5979e236c.tar.gz
perf timechart: Add more options to IO mode
--io-skip-eagain - don't show EAGAIN errors --io-min-time - make small io bursts visible --io-merge-dist - merge adjacent events Signed-off-by: Stanislav Fomichev <stfomichev@yandex-team.ru> Acked-by: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/n/1404835423-23098-5-git-send-email-stfomichev@yandex-team.ru Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Diffstat (limited to 'tools/perf/Documentation/perf-timechart.txt')
-rw-r--r--tools/perf/Documentation/perf-timechart.txt13
1 files changed, 13 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-timechart.txt b/tools/perf/Documentation/perf-timechart.txt
index ec6b46c7bca0..df98d1c82688 100644
--- a/tools/perf/Documentation/perf-timechart.txt
+++ b/tools/perf/Documentation/perf-timechart.txt
@@ -64,6 +64,19 @@ TIMECHART OPTIONS
duration or tasks with given name. If number is given it's interpreted
as number of nanoseconds. If non-numeric string is given it's
interpreted as task name.
+--io-skip-eagain::
+ Don't draw EAGAIN IO events.
+--io-min-time=<nsecs>::
+ Draw small events as if they lasted min-time. Useful when you need
+ to see very small and fast IO. It's possible to specify ms or us
+ suffix to specify time in milliseconds or microseconds.
+ Default value is 1ms.
+--io-merge-dist=<nsecs>::
+ Merge events that are merge-dist nanoseconds apart.
+ Reduces number of figures on the SVG and makes it more render-friendly.
+ It's possible to specify ms or us suffix to specify time in
+ milliseconds or microseconds.
+ Default value is 1us.
RECORD OPTIONS
--------------