linux-kernel - Re: [PATCH] perf: add csv-style output to perf stat (v2)

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Message-ID: <20101201181001.GA26071@ghostprotocols.net>
Date:	Wed, 1 Dec 2010 16:10:01 -0200
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Stephane Eranian <eranian@...gle.com>
Cc:	linux-kernel@...r.kernel.org, peterz@...radead.org, mingo@...e.hu,
	paulus@...ba.org, davem@...emloft.net, fweisbec@...il.com,
	perfmon2-devel@...ts.sf.net, eranian@...il.com,
	robert.richter@....com
Subject: Re: [PATCH] perf: add csv-style output to perf stat (v2)

Em Wed, Dec 01, 2010 at 06:49:05PM +0200, Stephane Eranian escreveu:
> This patch adds an option (-x/--field-separator) to print counts using
> a CSV-style output. The user can pass a custom separator. This makes it
> very easy to import counts directly into your favorite spreadsheet without
> having to write scripts.
> 
> Example:
> $ perf stat --field-separator=,  -a -- sleep 1
> 4009.961740,task-clock-msecs
> 13,context-switches
> 2,CPU-migrations
> 189,page-faults
> 9596385684,cycles
> 3493659441,instructions
> 872897069,branches
> 41562,branch-misses
> 22424,cache-references
> 1289,cache-misses

[root@...a ~]# perf stat -x,  -a -A -- sleep 1
-B option not supported with -x

 usage: perf stat [<options>] [<command>]

    -e, --event <event>   event selector. use 'perf list' to list
available events
    -i, --no-inherit      child tasks do not inherit counters
    -p, --pid <n>         stat events on existing process id


Guess we'll have to disable big_num automatically when -x is specified,
but at the same time notice if the user _explicitely_ asked for -B.

I'll fix this now.

- Arnaldo
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