linux-kernel - Re: [PATCH 05/13] perf tools: Add dynamic sort key for tracepoint events

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Date:	Mon, 4 Jan 2016 12:04:39 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Namhyung Kim <namhyung@...nel.org>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Jiri Olsa <jolsa@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>,
	David Ahern <dsahern@...il.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Andi Kleen <andi@...stfloor.org>,
	Wang Nan <wangnan0@...wei.com>
Subject: Re: [PATCH 05/13] perf tools: Add dynamic sort key for tracepoint
 events

Em Wed, Dec 23, 2015 at 02:07:02AM +0900, Namhyung Kim escreveu:
> With dynamic sort keys, you can use <event.field> as a sort key.  Those
> dynamic keys are checked and created on demand.  For instance, below is
> to sort by next_pid field on the same data file.
> 
>   $ perf report -s comm,sched:sched_switch.next_pid --stdio

I think we should add the 'perf report' command line in its output, so
that one can, from the tool output obtain the command line used to
produce it.

Anyway, good stuff, back from vacation/paternity leave, processing the
queue.

- Arnaldo

>   ...
>   # Overhead  Command            next_pid
>   # ........  ...............  ..........
>   #
>       21.23%  transmission-gt           0
>       20.86%  swapper               17773
>        6.62%  netctl-auto               0
>        5.25%  swapper                 109
>        5.21%  kworker/0:1H              0
>        1.98%  Xephyr                    0
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