Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261663AbUKOSwF (ORCPT ); Mon, 15 Nov 2004 13:52:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261664AbUKOSwF (ORCPT ); Mon, 15 Nov 2004 13:52:05 -0500 Received: from mx1.elte.hu ([157.181.1.137]:4744 "EHLO mx1.elte.hu") by vger.kernel.org with ESMTP id S261663AbUKOSwC (ORCPT ); Mon, 15 Nov 2004 13:52:02 -0500 Date: Mon, 15 Nov 2004 20:52:03 +0100 From: Ingo Molnar To: Mark_H_Johnson@raytheon.com Cc: linux-kernel@vger.kernel.org, Lee Revell , Rui Nuno Capela , "K.R. Foley" , Bill Huey , Adam Heath , Florian Schmidt , Thomas Gleixner , Michal Schmidt , Fernando Pablo Lopez-Lezcano , Karsten Wiese , Gunther Persoons , emann@mrv.com, Shane Shrybman , Amit Shah Subject: Re: [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm3-V0.7.25-1 Message-ID: <20041115195203.GA12321@elte.hu> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.1i X-ELTE-SpamVersion: MailScanner 4.31.6-itk1 (ELTE 1.2) SpamAssassin 2.63 ClamAV 0.73 X-ELTE-VirusStatus: clean X-ELTE-SpamCheck: no X-ELTE-SpamCheck-Details: score=-4.9, required 5.9, autolearn=not spam, BAYES_00 -4.90 X-ELTE-SpamLevel: X-ELTE-SpamScore: -4 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 935 Lines: 20 * Mark_H_Johnson@raytheon.com wrote: > 1209 80000000 0.005ms (+0.000ms): do_nmi (mcount) > 1209 80000000 0.005ms (+0.000ms): do_nmi (<00200286>) > 1209 80000000 0.006ms (+0.000ms): profile_hook (profile_tick) > 1209 80000000 0.006ms (+0.000ms): _raw_read_lock (profile_hook) > 1209 80000000 0.007ms (+0.196ms): _raw_read_unlock (profile_tick) > 1209 80000000 0.204ms (+0.001ms): set_new_owner (__down_mutex) i've seen NMIs causing such problems before. Could you try a testrun with all debug options disabled in the .config (and REGPARM enabled, etc.) plus nmi_watchdog=0? Just to see how many of the artifacts are related to debugging overhead. 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/