Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262283AbUKDQ3V (ORCPT ); Thu, 4 Nov 2004 11:29:21 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262285AbUKDQ3V (ORCPT ); Thu, 4 Nov 2004 11:29:21 -0500 Received: from mx2.elte.hu ([157.181.151.9]:30608 "EHLO mx2.elte.hu") by vger.kernel.org with ESMTP id S262283AbUKDQ3P (ORCPT ); Thu, 4 Nov 2004 11:29:15 -0500 Date: Thu, 4 Nov 2004 17:30:12 +0100 From: Ingo Molnar To: Mark_H_Johnson@raytheon.com Cc: Karsten Wiese , Bill Huey , Adam Heath , "K.R. Foley" , linux-kernel@vger.kernel.org, Florian Schmidt , Fernando Pablo Lopez-Lezcano , Lee Revell , Rui Nuno Capela , Thomas Gleixner , Michal Schmidt Subject: Re: [patch] Real-Time Preemption, -RT-2.6.10-rc1-mm2-V0.7.1 Message-ID: <20041104163012.GA3498@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=-2.201, required 5.9, BAYES_00 -4.90, SORTED_RECIPS 2.70 X-ELTE-SpamLevel: X-ELTE-SpamScore: -2 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1057 Lines: 28 * Mark_H_Johnson@raytheon.com wrote: > >what priority does events/0 and events/1 have? keventd handles part of > >the mouse/keyboard workload. > The default priorities and not RT. > > ps -eo pid,pri,rtprio,cmd > ... > 6 34 - [events/0] > 7 34 - [events/1] > ... > I can set those as well but then I'd probably have to follow with > the X server and everything else in the chain. The starvation problem > ripples across the system. X should be scheduled on the other CPU just fine. Only per-CPU kernel threads (which are affine to their particular CPU) are affected by this problem - ordinary tasks not. I.e. the system threads that have /0 and /1 in their name. In theory you should not even need to chrt the hardirq threads, those should schedule fine too. 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/