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Message-ID: <20101213143630.GI5407@ghostprotocols.net> Date: Mon, 13 Dec 2010 12:36:30 -0200 From: Arnaldo Carvalho de Melo <acme@...stprotocols.net> To: Andres Freund <andres@...razel.de> Cc: Ralf Hildebrandt <Ralf.Hildebrandt@...rite.de>, linux-kernel@...r.kernel.org Subject: Re: Costly Context Switches 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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