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| author | Borislav Petkov <bp@suse.de> | 2016-03-07 22:44:44 +0300 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2016-05-01 01:05:54 +0300 |
| commit | 49d9f61a78c1272f919d08f15dcb6430c88d4425 (patch) | |
| tree | d5d267c15ddb15ddc9f351b2789a4a4d608baafb | |
| parent | 70628301514b53d6a2c2da6cb61b5135ef20a2b2 (diff) | |
| download | linux-49d9f61a78c1272f919d08f15dcb6430c88d4425.tar.xz | |
perf stat: Document --detailed option
commit f594bae08183fb6b57db55387794ece3e1edf6f6 upstream.
I'm surprised this remained undocumented since at least 2011. And it is
actually a very useful switch, as Steve and I came to realize recently.
Add the text from
2cba3ffb9a9d ("perf stat: Add -d -d and -d -d -d options to show more CPU events")
which added the incrementing aspect to -d.
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Davidlohr Bueso <dbueso@suse.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mel Gorman <mgorman@suse.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 2cba3ffb9a9d ("perf stat: Add -d -d and -d -d -d options to show more CPU events")
Link: http://lkml.kernel.org/r/1457347294-32546-1-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -rw-r--r-- | tools/perf/Documentation/perf-stat.txt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-stat.txt b/tools/perf/Documentation/perf-stat.txt index 29ee857c09c6..6f9fbb44cd19 100644 --- a/tools/perf/Documentation/perf-stat.txt +++ b/tools/perf/Documentation/perf-stat.txt @@ -50,6 +50,14 @@ OPTIONS --scale:: scale/normalize counter values +-d:: +--detailed:: + print more detailed statistics, can be specified up to 3 times + + -d: detailed events, L1 and LLC data cache + -d -d: more detailed events, dTLB and iTLB events + -d -d -d: very detailed events, adding prefetch events + -r:: --repeat=<n>:: repeat command and print average + stddev (max: 100). 0 means forever. |