Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161429AbWI2SsQ (ORCPT ); Fri, 29 Sep 2006 14:48:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161435AbWI2SsQ (ORCPT ); Fri, 29 Sep 2006 14:48:16 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:1262 "EHLO mx2.mail.elte.hu") by vger.kernel.org with ESMTP id S1161429AbWI2SsP (ORCPT ); Fri, 29 Sep 2006 14:48:15 -0400 Date: Fri, 29 Sep 2006 20:39:59 +0200 From: Ingo Molnar To: Andi Kleen Cc: Jan Beulich , Andrew Morton , linux-kernel@vger.kernel.org, Randy Dunlap , tilman@imap.cc Subject: Re: [2.6.18-rc7-mm1] slow boot Message-ID: <20060929183959.GA13991@elte.hu> References: <4516B966.3010909@imap.cc> <20060924145337.ae152efd.akpm@osdl.org> <451BFFA9.4030000@imap.cc> <200609281912.01858.ak@suse.de> <451C58AC.5060601@imap.cc> <20060928163046.055b3ce0.rdunlap@xenotime.net> <20060928163046.055b3ce0.rdunlap@xenotime.net> <451C65A0.1080002@imap.cc> <451CE2F0.76E4.0078.0@novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.1i X-ELTE-SpamScore: -2.8 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.8 required=5.9 tests=ALL_TRUSTED,AWL,BAYES_50 autolearn=no SpamAssassin version=3.0.3 -3.3 ALL_TRUSTED Did not pass through any untrusted hosts 0.5 BAYES_50 BODY: Bayesian spam probability is 40 to 60% [score: 0.5000] -0.0 AWL AWL: From: address is in the auto white-list X-ELTE-VirusStatus: clean Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 875 Lines: 22 * Andi Kleen wrote: > "Jan Beulich" writes: > > > There's nothing stack trace/unwind related among the functions listed at all afaics. > > I don't know much about how profiling works, is it perhaps just missing something? > > Perhaps lockdep calls them with interrupts off? The old profiler > doesn't support profiling with interrupts off. oprofile does, but it > cannot be used at early boot. Yes, lockdep does everything that changes the dependency graph(s) with irqs off. Jan, i bounced you the mail with the function traces included, that should show you the overhead points. Ingo - 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/