linux-kernel - [PATCH 0/7] perf tools: Add switch-output size and time threshold options

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Date:   Tue,  3 Jan 2017 09:19:53 +0100
From:   Jiri Olsa <jolsa@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Wang Nan <wangnan0@...wei.com>,
        lkml <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Namhyung Kim <namhyung@...nel.org>,
        David Ahern <dsahern@...il.com>
Subject: [PATCH 0/7] perf tools: Add switch-output size and time threshold options

hi,
adding a way to configure switch data output
for size and time, like:

  $ sudo perf record -e 'sched:*' --switch-output=10M -avg
  callchain: type FP
  switch-output with 10M size threshold
  mmap size 528384B
  [ perf record: dump data: Woken up 37 times ]
  [ perf record: Dump perf.data.2017010309135512 ]
  [ perf record: dump data: Woken up 39 times ]
  [ perf record: Dump perf.data.2017010309135771 ]
  [ perf record: dump data: Woken up 38 times ]
  [ perf record: Dump perf.data.2017010309140005 ]
  ^C[ perf record: Woken up 16 times to write data ]
  [ perf record: Dump perf.data.2017010309140111 ]
  [ perf record: Captured and wrote 4.748 MB perf.data.<timestamp> ]
  ...

the default for switch-output option stays
and does the SIGUSR2 output switch

Also available in:
  git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
  perf/fixes

thanks,
jirka


Cc: Wang Nan <wangnan0@...wei.com>
---
Jiri Olsa (7):
      tools lib subcmd: Add OPT_STRING_OPTARG_SET option
      perf record: Make __record_options static
      perf record: Fix --switch-output documentation and comment
      perf record: Add struct switch_output
      perf record: Change switch-output option to take optional argument
      perf record: Add switch-output size option argument
      perf record: Add switch-output time option argument

 tools/lib/subcmd/parse-options.c         |   3 ++
 tools/lib/subcmd/parse-options.h         |   5 ++++
 tools/perf/Documentation/perf-record.txt |  13 +++++++--
 tools/perf/builtin-record.c              | 134 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----------
 4 files changed, 139 insertions(+), 16 deletions(-)