linux-kernel - Re: perf-stat per thread results

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Message-ID: <20110513204530.GF8950@ghostprotocols.net>
Date:	Fri, 13 May 2011 17:45:30 -0300
From:	Arnaldo Carvalho de Melo <acme@...hat.com>
To:	Wim Heirman <wim@...rman.net>
Cc:	Ingo Molnar <mingo@...e.hu>, David Ahern <dsahern@...il.com>,
	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Frédéric Weisbecker <fweisbec@...il.com>,
	Brice Goglin <Brice.Goglin@...ia.fr>
Subject: Re: perf-stat per thread results

Em Fri, May 13, 2011 at 10:32:58PM +0200, Wim Heirman escreveu:
> > It's supposed to do that if --stat is specified, and it used to work - see this
> > commit:

> >  8d51327090ac: perf report: Fix and improve the displaying of per-thread event counters

> > and the output there:
> >
> >     #  PID   TID  cache-misses  cache-references
> >       4658  4659        495581           3238779
> >       4658  4662        498246           3236823
> >       4658  4663        499531           3243162

> > which appears to be roughly what Wim is asking for, AFAICT.

> Thanks, this is exactly what I'm looking for. In 2.6.32 (Ubuntu 10.04)
> it works, although if I use --pid rather than the -- <command> variant
> the first thread seams to be missing. In 2.6.38 (Ubuntu 11.04) the
> first thread is missing in both use cases, and I get one column per
> processor (which in itself is fine).

Can you try after applying the patches in this message:

http://marc.info/?l=linux-kernel&m=130385067430510&w=2

and report your results?

If it fixes the problems you're experiencing, please provide a:

Tested-by: Wim Heirman <wim@...rman.net>

So that I can add when sending them to Ingo.

Thanks,

- Arnaldo
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