Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752289Ab0LMOgh (ORCPT ); Mon, 13 Dec 2010 09:36:37 -0500 Received: from mail-yw0-f46.google.com ([209.85.213.46]:60073 "EHLO mail-yw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751721Ab0LMOgg (ORCPT ); Mon, 13 Dec 2010 09:36:36 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to:x-url:user-agent; b=KblIK3h47LAV9kRKC4hO0/4SRPylV346BuqUa/7guFlqtDPlepoCUh49uwkVm60h0r tR0vyh3OvaaJnBg8gsn6RccinLJEUkrMs5MvWtupIlCJsuQseQZE7cDz0+nNcWJzfVW2 NUwfPjTMlnzaBlSoGUjnwkRfdLrGChQeXJQHA= Date: Mon, 13 Dec 2010 12:36:30 -0200 From: Arnaldo Carvalho de Melo To: Andres Freund Cc: Ralf Hildebrandt , linux-kernel@vger.kernel.org Subject: Re: Costly Context Switches Message-ID: <20101213143630.GI5407@ghostprotocols.net> References: <20101212151112.GE26583@charite.de> <201012131525.54577.andres@anarazel.de> <20101213142911.GH5407@ghostprotocols.net> <201012131530.46633.andres@anarazel.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201012131530.46633.andres@anarazel.de> X-Url: http://acmel.wordpress.com User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1152 Lines: 30 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@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/