From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262263AbVGGAXJ (ORCPT ); Wed, 6 Jul 2005 20:23:09 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262301AbVGFT7r (ORCPT ); Wed, 6 Jul 2005 15:59:47 -0400 Received: from mail.metronet.co.uk ([213.162.97.75]:14778 "EHLO mail.metronet.co.uk") by vger.kernel.org with ESMTP id S262306AbVGFQbN (ORCPT ); Wed, 6 Jul 2005 12:31:13 -0400 From: Alistair John Strachan To: Ingo Molnar Subject: Re: Realtime Preemption, 2.6.12, Beginners Guide? Date: Wed, 6 Jul 2005 17:31:11 +0100 User-Agent: KMail/1.8.1 Cc: linux-kernel@vger.kernel.org References: <200507061257.36738.s0348365@sms.ed.ac.uk> <200507061658.53845.s0348365@sms.ed.ac.uk> <20050706162856.GB24728@elte.hu> In-Reply-To: <20050706162856.GB24728@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200507061731.11355.s0348365@sms.ed.ac.uk> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wednesday 06 Jul 2005 17:28, Ingo Molnar wrote: > * Alistair John Strachan wrote: > > On Wednesday 06 Jul 2005 14:39, Ingo Molnar wrote: > > > * Alistair John Strachan wrote: > > > > Then it continues to boot. I'm getting periodic lockups under high > > > > network load, however, though I suspect that might be the ipw2200 > > > > driver I compiled against the realtime-preempt kernel. Are there any > > > > known issues with external modules versus PREEMPT-RT? > > > > > > you should keep an eye on compile-time warnings, but otherwise, most of > > > the API deviations should be runtime detected and should be reported in > > > one way or another (if you have all debugging options enabled). > > > > I now no longer suspect the ipw2200 module. It locks up within 5 > > minutes, reliably, with or without network load. I seem to always have > > to promote a large redraw in X11 before it occurs, but this is just > > hand waving, I don't really have any evidence. > > just to make sure: you dont have debug_direct_keyboard when using the > console keyboard and mouse, correct? Sometimes i forget to turn it off > and i get a crash in the keyboard or mouse irq after some time. Under X > that often looks like a silent hard lockup. Nope, this effect is independent of any attempt to debug the hardlock. I've not played with debug_direct_keyboard at all before it happens. -- Cheers, Alistair. personal: alistair()devzero!co!uk university: s0348365()sms!ed!ac!uk student: CS/CSim Undergraduate contact: 1F2 55 South Clerk Street, Edinburgh. EH8 9PP.