Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 14 Mar 2002 09:34:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 14 Mar 2002 09:34:46 -0500 Received: from mail3.aracnet.com ([216.99.193.38]:39337 "EHLO mail3.aracnet.com") by vger.kernel.org with ESMTP id ; Thu, 14 Mar 2002 09:34:37 -0500 Date: Thu, 14 Mar 2002 06:34:55 -0800 From: "Martin J. Bligh" Reply-To: "Martin J. Bligh" To: Martin Wilck , Ingo Molnar , oliend@us.ibm.com cc: Linux Kernel mailing list Subject: Re: Severe IRQ problems on Foster (P4 Xeon) system Message-ID: <546494477.1016087693@[10.10.2.3]> In-Reply-To: In-Reply-To: X-Mailer: Mulberry/2.1.2 (Win32) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >> let me know whether this fixes your problem, > > The patch distributes the IRQs nicely between CPUs, but unfortunately does > not fix our timer IRQ problem. > > Btw is it correct that one could also use the APIC Task Priority Registers > to implement "fair" IRQ routing? (If linux adjusted them, which it > currently doesn't). Yes, and Dave Olien has already done this. It's a good idea for P3, and seems to me to be essential for P4. Dave, can you republish your patch? M. - 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/