From: Adrian Hunter <adrian.hunter@intel.com>
To: Jiri Olsa <jolsa@redhat.com>
Cc: linux-kernel@vger.kernel.org,
Corey Ashford <cjashfor@linux.vnet.ibm.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Ingo Molnar <mingo@elte.hu>, Namhyung Kim <namhyung@kernel.org>,
Paul Mackerras <paulus@samba.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Andi Kleen <ak@linux.intel.com>, David Ahern <dsahern@gmail.com>
Subject: Re: [PATCH 24/25] perf tools: Add multi file '-M' option for record command
Date: Mon, 02 Sep 2013 10:52:46 +0300 [thread overview]
Message-ID: <522443CE.5030703@intel.com> (raw)
In-Reply-To: <1378031796-17892-25-git-send-email-jolsa@redhat.com>
On 01/09/13 13:36, Jiri Olsa wrote:
> split event data into multiple files based on the file
> size or time delta specified as an argument to the option.
>
> Adding multi file '-M' option for record command to store
> output perf.data into multiple files based on the size
> threshold.
>
> The threshold is specified either as size (B/K/M/G) or time
> (s/m/h) by appending the size with appropriate unit, like:
> -M 5M for 5 megabytes threshold
> -M 1h for 1 hour threshold
> The generated name for each data file is appended with sequential
> number (prepended by 5 zeros).For default output file name it
> will be:
> perf.data-00000
> perf.data-00001
> perf.data-00002
> ...
>
> Also watermark/wakeup_watermark is set accordingly to get
> wake ups more often so we could get close enough to the
> file size promise.
>
> Example:
> $ perf record -M 5M yes > /dev/null
> ^C[ perf record: Woken up 228 times to write data ]
> [ perf record: Captured and wrote 20.246 MB perf.data-[0-4](~884542 samples) ]
> yes: Interrupt
> $ ls -l perf.data-0*
> -rw------- 1 jolsa jolsa 5289856 Aug 16 16:07 perf.data-00000
> -rw------- 1 jolsa jolsa 5296008 Aug 16 16:08 perf.data-00001
> -rw------- 1 jolsa jolsa 5344968 Aug 16 16:09 perf.data-00002
> -rw------- 1 jolsa jolsa 5309144 Aug 16 16:09 perf.data-00003
> -rw------- 1 jolsa jolsa 2358268 Aug 16 16:09 perf.data-00004
Did you consider doing this with "perf inject" instead of "perf record"?
That way you could get the split exactly right, and you could split the same
file different ways.
next prev parent reply other threads:[~2013-09-02 7:46 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-01 10:36 [PATCHv2 00/25] perf tool: Add support for multiple data file storage Jiri Olsa
2013-09-01 10:36 ` [PATCH 01/25] perf tools: Check mmap pages value early Jiri Olsa
2013-10-15 5:24 ` [tip:perf/core] " tip-bot for Jiri Olsa
2013-09-01 10:36 ` [PATCH 02/25] perf tools: Add possibility to specify mmap size Jiri Olsa
2013-10-15 5:25 ` [tip:perf/core] " tip-bot for Jiri Olsa
2013-09-01 10:36 ` [PATCH 03/25] perf tools: Introduce perf_evlist__new_default function Jiri Olsa
2013-10-15 5:25 ` [tip:perf/core] perf evlist: " tip-bot for Jiri Olsa
2013-09-01 10:36 ` [PATCH 04/25] perf tools: Adding throttle event data struct support Jiri Olsa
2013-10-15 5:25 ` [tip:perf/core] " tip-bot for Jiri Olsa
2013-09-01 10:36 ` [PATCH 05/25] perf tests: Add simple session read/write test Jiri Olsa
2013-09-01 10:36 ` [PATCH 06/25] perf tests: Add session reading test for little endian perf data Jiri Olsa
2013-09-01 10:36 ` [PATCH 07/25] perf tests: Add session reading test for big " Jiri Olsa
2013-09-01 10:36 ` [PATCH 08/25] perf doc: Add perf data file documentation Jiri Olsa
2013-09-01 10:36 ` [PATCH 09/25] perf tools: Introduce perf data file version CHECK macro Jiri Olsa
2013-09-01 10:36 ` [PATCH 10/25] perf tools: Introduce swap_features function Jiri Olsa
2013-09-01 10:36 ` [PATCH 11/25] perf tools: Introduce swap_header function Jiri Olsa
2013-09-01 10:36 ` [PATCH 12/25] perf tools: Separate version 2 specific perf data header bits Jiri Olsa
2013-09-01 10:36 ` [PATCH 13/25] perf tools: Using evlist as a holder for event_desc feature Jiri Olsa
2013-09-01 10:36 ` [PATCH 14/25] perf tools: Introduce perf.data version 3 format Jiri Olsa
2013-09-01 10:36 ` [PATCH 15/25] perf tools: Add perf data version 3 header swap Jiri Olsa
2013-09-01 10:36 ` [PATCH 16/25] perf tools: Add perf data version 3 header read Jiri Olsa
2013-09-01 10:36 ` [PATCH 17/25] perf tools: Add perf.data version 3 header write Jiri Olsa
2013-09-01 10:36 ` [PATCH 18/25] perf tools: Get rid of post_processing_offset in record command Jiri Olsa
2013-09-01 10:36 ` [PATCH 19/25] perf tools: Move synthesizing into single function Jiri Olsa
2013-09-01 10:36 ` [PATCH 20/25] perf tools: Add perf_data_file__open interface to data object Jiri Olsa
2013-09-01 10:36 ` [PATCH 21/25] perf tools: Separating data file properties from session Jiri Olsa
2013-09-01 10:36 ` [PATCH 22/25] perf tests: Add session reading test for little endian perf data v3 Jiri Olsa
2013-09-01 10:36 ` [PATCH 23/25] perf tests: Add session reading test for big " Jiri Olsa
2013-09-01 10:36 ` [PATCH 24/25] perf tools: Add multi file '-M' option for record command Jiri Olsa
2013-09-02 7:52 ` Adrian Hunter [this message]
2013-09-02 8:37 ` Jiri Olsa
2013-09-02 9:11 ` Adrian Hunter
2013-09-02 9:40 ` Jiri Olsa
2013-09-01 10:36 ` [PATCH 25/25] perf tools: Have the process properly sythesized in subsequent data files Jiri Olsa
2013-09-02 2:42 ` [PATCHv2 00/25] perf tool: Add support for multiple data file storage Andi Kleen
2013-09-09 11:17 ` Peter Zijlstra
2013-09-09 11:36 ` Jiri Olsa
2013-09-09 11:55 ` Peter Zijlstra
2013-09-09 14:03 ` Jiri Olsa
2013-09-09 14:11 ` David Ahern
2013-09-09 14:31 ` Jiri Olsa
2013-09-09 15:03 ` David Ahern
2013-09-14 18:32 ` David Ahern
2013-09-09 16:06 ` Ingo Molnar
2013-09-10 17:29 ` David Ahern
2013-09-10 6:54 ` Adrian Hunter
2013-09-10 9:15 ` Peter Zijlstra
2013-09-10 8:57 ` Namhyung Kim
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