Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261695AbUKXCpS (ORCPT ); Tue, 23 Nov 2004 21:45:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261706AbUKXCnp (ORCPT ); Tue, 23 Nov 2004 21:43:45 -0500 Received: from mx1.elte.hu ([157.181.1.137]:22944 "EHLO mx1.elte.hu") by vger.kernel.org with ESMTP id S261688AbUKXCnM (ORCPT ); Tue, 23 Nov 2004 21:43:12 -0500 Date: Wed, 24 Nov 2004 04:45:20 +0100 From: Ingo Molnar To: Lee Revell Cc: linux-kernel@vger.kernel.org, Rui Nuno Capela , Mark_H_Johnson@Raytheon.com, "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 , Esben Nielsen Subject: Re: [patch] Real-Time Preemption, -RT-2.6.10-rc2-mm2-V0.7.30-9 Message-ID: <20041124034520.GA12785@elte.hu> References: <20041111215122.GA5885@elte.hu> <20041116125402.GA9258@elte.hu> <20041116130946.GA11053@elte.hu> <20041116134027.GA13360@elte.hu> <20041117124234.GA25956@elte.hu> <20041118123521.GA29091@elte.hu> <20041118164612.GA17040@elte.hu> <20041122005411.GA19363@elte.hu> <20041123175823.GA8803@elte.hu> <1101257903.13780.15.camel@krustophenia.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1101257903.13780.15.camel@krustophenia.net> 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: 1209 Lines: 29 * Lee Revell wrote: > On Tue, 2004-11-23 at 18:58 +0100, Ingo Molnar wrote: > > i have released the -V0.7.30-9 Real-Time Preemption patch, which can be > > downloaded from the usual place: > > > > http://redhat.com/~mingo/realtime-preempt/ > > I have notices some weird interactivity issues with this. These are > also present in T3. > > The symptom is that CPU bound tasks like kernel compiles will starve > I/O bound tasks like evolution for a _long_ time. If I have a kernel > build and external modules building at the same time and Evolution > goes to "Update message list...", it can sit and spin with a blank > message pane for a minute or two. If I suspend the builds, the > message list renders immediately. could you try the vanilla -rc2-mm2 kernel (with PREEMPT enabled), does it behave in such a way too? At first sight this could be a property of the upstream scheduler, but maybe it's special to PREEMPT_RT. 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/