perf record: Add switch-output time option argument
authorJiri Olsa <jolsa@kernel.org>
Mon, 9 Jan 2017 09:52:00 +0000 (10:52 +0100)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Wed, 11 Jan 2017 19:48:02 +0000 (16:48 -0300)
commitbfacbe3bf2443c805aec4c04ecb558d03d0d3ebc
tree1dec6ba33420d982de9f19763aa82553178e168c
parent0c5824498e8bd5b7d30dc03448cd89efaee4bead
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>
tools/perf/Documentation/perf-record.txt
tools/perf/builtin-record.c