From: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
To: Andres Freund <andres@anarazel.de>
Cc: Ralf Hildebrandt <Ralf.Hildebrandt@charite.de>,
linux-kernel@vger.kernel.org
Subject: Re: Costly Context Switches
Date: Mon, 13 Dec 2010 12:36:30 -0200 [thread overview]
Message-ID: <20101213143630.GI5407@ghostprotocols.net> (raw)
In-Reply-To: <201012131530.46633.andres@anarazel.de>
Em Mon, Dec 13, 2010 at 03:30:46PM +0100, Andres Freund escreveu:
> On Monday 13 December 2010 15:29:11 Arnaldo Carvalho de Melo wrote:
> > Em Mon, Dec 13, 2010 at 03:25:54PM +0100, Andres Freund escreveu:
> > > Hm. Its also a good starting point but it may be harder to see the
> > > differences between dovecot-2.0 and dovecot-1.2 that way because its
> > > harder to see if its
> > Well, for that he can try 'perf diff', i.e.:
> > 1. run perf record on dovecot-1.2
> > 2. run perf record on dovecot-2.0
> > 3. perf diff
> Wow. That one I didnt know about yet.
>
> Too bad that perf docs/examples are so spread out...
There is a bit of info on these places:
http://vger.kernel.org/~acme/perf/lk2010-perf-paper.pdf
http://vger.kernel.org/~acme/perf/perf-plumbers2010.pdf
Also please consider helping organizing the existing documentation in a
way that gets them more easily accessible :-)
- Arnaldo
prev parent reply other threads:[~2010-12-13 14:36 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-12 15:11 Costly Context Switches Ralf Hildebrandt
2010-12-12 19:07 ` Andres Freund
2010-12-13 13:51 ` Arnaldo Carvalho de Melo
2010-12-13 14:00 ` Ralf Hildebrandt
2010-12-13 14:25 ` Andres Freund
2010-12-13 14:29 ` Arnaldo Carvalho de Melo
2010-12-13 14:30 ` Andres Freund
2010-12-13 14:36 ` Arnaldo Carvalho de Melo [this message]
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