diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2017-01-09 12:52:00 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-01-11 22:48:02 +0300 |
| commit | bfacbe3bf2443c805aec4c04ecb558d03d0d3ebc (patch) | |
| tree | 1dec6ba33420d982de9f19763aa82553178e168c /tools/perf/Documentation/perf-record.txt | |
| parent | 0c5824498e8bd5b7d30dc03448cd89efaee4bead (diff) | |
| download | linux-bfacbe3bf2443c805aec4c04ecb558d03d0d3ebc.tar.xz | |
perf record: Add switch-output time option argument
It's now possible to specify the threshold time for perf.data like:
$ perf record --switch-output=30s ...
Once it's reached, the current data are dumped in to the
perf.data.<timestamp> file and session does on.
$ perf record --switch-output=30s ...
[ perf record: dump data: Woken up 44 times ]
[ perf record: Dump perf.data.2017010213043746 ]
...
The time is expected to be a number with appended unit
character - s/m/h/d.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: Wang Nan <wangnan0@huawei.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/1483955520-29063-7-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Documentation/perf-record.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-record.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 3d55d2fd48b3..27256bc68eda 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -427,6 +427,8 @@ based on 'mode' value: "signal" - when receiving a SIGUSR2 (default value) or <size> - when reaching the size threshold, size is expected to be a number with appended unit character - B/K/M/G + <time> - when reaching the time threshold, size is expected to + be a number with appended unit character - s/m/h/d Note: the precision of the size threshold hugely depends on your configuration - the number and size of your ring |