From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262246AbVGGT4Y (ORCPT ); Thu, 7 Jul 2005 15:56:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261373AbVGGTy3 (ORCPT ); Thu, 7 Jul 2005 15:54:29 -0400 Received: from mx2.elte.hu ([157.181.151.9]:65461 "EHLO mx2.elte.hu") by vger.kernel.org with ESMTP id S262028AbVGGTxC (ORCPT ); Thu, 7 Jul 2005 15:53:02 -0400 Date: Thu, 7 Jul 2005 21:52:21 +0200 From: Ingo Molnar To: William Weston Cc: linux-kernel@vger.kernel.org Subject: Re: Real-Time Preemption, -RT-2.6.12-final-V0.7.51-08 Message-ID: <20050707195221.GA1601@elte.hu> References: <200507010027.33079.annabellesgarden@yahoo.de> <20050701071850.GA18926@elte.hu> <20050703140432.GA19074@elte.hu> <20050703181229.GA32741@elte.hu> <20050706100451.GA7336@elte.hu> <20050707191854.GA32384@elte.hu> 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-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 * William Weston wrote: > On Thu, 7 Jul 2005, Ingo Molnar wrote: > > > > Without the last two chunks of this patch, the UP Athlon box locks up > > > hard as soon as jackd is started up. > > > > hm, do you have CONFIG_PCI_MSI enabled by any chance? > > I've never enabled CONFIG_PCI_MSI. What's your experience when it > comes to stability and performance? it's really not needed unless you have PCI-X hardware, but it sometimes gets enabled and it had IRQ handling bugs under PREEMPT_HARDIRQS (and PREEMPT_RT), which i fixed in the -51-12 patch. But if you didnt have it enabled then there's no IO-APIC change affecting your config. Ingo