linux-kernel - Re: [tip:perf/diff] perf diff: Introduce tool to show performance difference

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Date:	Tue, 15 Dec 2009 10:55:42 -0200
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-tip-commits@...r.kernel.org, linux-kernel@...r.kernel.org,
	paulus@...ba.org, hpa@...or.com, mingo@...hat.com,
	a.p.zijlstra@...llo.nl, efault@....de, shemminger@...tta.com,
	paulmck@...ux.vnet.ibm.com, fweisbec@...il.com, tglx@...utronix.de
Subject: Re: [tip:perf/diff] perf diff: Introduce tool to show performance
	difference

Em Tue, Dec 15, 2009 at 10:52:14AM +0100, Ingo Molnar escreveu:
> 
> 'perf diff' looks to be very useful!
> 
> I think we want to improve the default output some more:
> 
> For example there should be column names like for perf report:
> 
> # Overhead    Command                 Shared Object  Symbol
> # ........  .........  ............................  ......
> #
>     13.87%  hackbench  [kernel]                      [k] _raw_spin_lock
>      5.60%  hackbench  [kernel]                      [k] copy_user_generic_string
>      5.23%  hackbench  [kernel]                      [k] __cache_free

Ok, most suggestions boil down to move more code from builtin-report.c
to session.c and use in builtin-diff.c. Surgery beginning.

- Arnaldo
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