linux-kernel - Re: [PATCH v4 0/4] perf timechart io mode

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Date:	Tue, 24 Jun 2014 10:41:14 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	Stanislav Fomichev <stfomichev@...dex-team.ru>
Cc:	a.p.zijlstra@...llo.nl, paulus@...ba.org, mingo@...hat.com,
	acme@...nel.org, namhyung@...nel.org, artagnon@...il.com,
	rusty@...tcorp.com.au, bp@...e.de, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 0/4] perf timechart io mode

On Fri, Jun 20, 2014 at 02:29:47PM +0400, Stanislav Fomichev wrote:
> This patchset adds IO mode: instead of process time we record io syscalls
> and then draw timechart of writes/reads/tx/rx/polls.
> 
> v4:
>   - another attempt for fix segfault when skipping invalid tracepoints
>   - added new patch to fix rendering in Firefox

hum, got this when trying:

[jolsa@...va perf]$ sudo ./perf timechart record -I
^C[ perf record: Woken up 2 times to write data ]
[ perf record: Captured and wrote 1.071 MB perf.data (~46806 samples) ]
[jolsa@...va perf]$ ./perf timechart
Invalid previous event (non-zero)!
0x113f80 [0x8]: failed to process type: 68

jirka

> 
> v3:
>   - fixed segfault when skipping invalid tracepoints
>   - added ms/us units support for --io-xyz time options
>   - fixed missing boxes on Firefox
> 
> v2:
>   - separated start_time fix into distinct commit
>   - separated --io-xyz options into distinct commit
>   - fixed 'error' shadowing
>   - initialized variables in declaration when possible
>   - removed assert usage
>   - fprintf -> pr_err
>   - removed wrongly placed __maybe_unused
> 
> Stanislav Fomichev (4):
>   perf timechart: fix rendering in Firefox
>   perf timechart: implement IO mode
>   perf timechart: conditionally update start_time on fork
>   perf timechart: add more options to IO mode
> 
>  tools/perf/Documentation/perf-timechart.txt |  38 +-
>  tools/perf/builtin-timechart.c              | 686 +++++++++++++++++++++++++++-
>  tools/perf/util/svghelper.c                 | 168 +++++--
>  tools/perf/util/svghelper.h                 |   6 +-
>  4 files changed, 838 insertions(+), 60 deletions(-)
> 
> -- 
> 1.8.3.2
> 
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