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| author |   Jiri Olsa <jolsa@redhat.com> | 2017-02-17 18:00:34 +0100 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-02-17 17:31:10 -0300 |
| commit | 0d79f8b93187c771b6971acfaba67f4e2f1e0710 (patch) | |
| tree | 27c99c7c1efeaabbe39a07ff3183e53dfedc40e7 /tools/perf/Documentation/perf-record.txt | |
| parent | perf tools: Fail on using multiple bits long terms without value (diff) | |
| download | linux-dev-0d79f8b93187c771b6971acfaba67f4e2f1e0710.tar.xz linux-dev-0d79f8b93187c771b6971acfaba67f4e2f1e0710.zip | |
perf stat: Add -a as default target
Boris asked for default -a option in case we monitor only uncore events.
While implementing that I thought it might be actually useful to make it
overall default.
Running 'perf stat' will now collect system wide data.
Committer note:
Testing it:
# perf stat
^C
Performance counter stats for 'system wide':
3571.559178 cpu-clock (msec) # 4.000 CPUs utilized
3,346 context-switches # 0.937 K/sec
277 cpu-migrations # 0.078 K/sec
57,271 page-faults # 0.016 M/sec
4,535,633,835 cycles # 1.270 GHz
6,389,736,516 instructions # 1.41 insn per cycle
1,541,293,875 branches # 431.547 M/sec
14,526,396 branch-misses # 0.94% of all branches
0.892950118 seconds time elapsed
#
Requested-and-Acked-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20170217170034.GB15389@krava
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-record.txt')
0 files changed, 0 insertions, 0 deletions