Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262442AbUJ0NzA (ORCPT ); Wed, 27 Oct 2004 09:55:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262448AbUJ0Ny7 (ORCPT ); Wed, 27 Oct 2004 09:54:59 -0400 Received: from mx2.elte.hu ([157.181.151.9]:38029 "EHLO mx2.elte.hu") by vger.kernel.org with ESMTP id S262442AbUJ0Nvz (ORCPT ); Wed, 27 Oct 2004 09:51:55 -0400 Date: Wed, 27 Oct 2004 15:53:09 +0200 From: Ingo Molnar To: Rui Nuno Capela Cc: linux-kernel@vger.kernel.org, Lee Revell , mark_h_johnson@raytheon.com, "K.R. Foley" , Bill Huey , Adam Heath , Florian Schmidt , Thomas Gleixner , Michal Schmidt , Fernando Pablo Lopez-Lezcano , Karsten Wiese Subject: Re: [patch] Real-Time Preemption, -RT-2.6.9-mm1-V0.3 Message-ID: <20041027135309.GA8090@elte.hu> References: <20041019124605.GA28896@elte.hu> <20041019180059.GA23113@elte.hu> <20041020094508.GA29080@elte.hu> <20041021132717.GA29153@elte.hu> <20041022133551.GA6954@elte.hu> <20041022155048.GA16240@elte.hu> <20041022175633.GA1864@elte.hu> <20041025104023.GA1960@elte.hu> <20041027001542.GA29295@elte.hu> <5225.195.245.190.94.1098880980.squirrel@195.245.190.94> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5225.195.245.190.94.1098880980.squirrel@195.245.190.94> 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: 848 Lines: 24 * Rui Nuno Capela wrote: > OK. Currently with RT-V0.3.2. > > So it seems that the jackd -R is no more an issue here. great. > However (oh no!:) those jackd -R xruns are still frequent, much > frequent than RT-U3, which is my stable RT kernel atm. -V0.4.1 could help with this problem. There were a number of places where the PREEMPT_REALTIME kernel missed reschedules so it could easily happen that jackd would sit in the runqueue waiting to be executed and the kernel got quickly out of a critical section but then the kernel 'forgot' to reschedule for many milliseconds! 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/