Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262807AbVD2QDw (ORCPT ); Fri, 29 Apr 2005 12:03:52 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262809AbVD2QAu (ORCPT ); Fri, 29 Apr 2005 12:00:50 -0400 Received: from [195.23.16.24] ([195.23.16.24]:35238 "EHLO bipbip.comserver-pie.com") by vger.kernel.org with ESMTP id S262814AbVD2P7s (ORCPT ); Fri, 29 Apr 2005 11:59:48 -0400 Message-ID: <427259F0.1080009@grupopie.com> Date: Fri, 29 Apr 2005 16:59:44 +0100 From: Paulo Marques Organization: Grupo PIE User-Agent: Mozilla Thunderbird 1.0 (X11/20041206) X-Accept-Language: en-us, en MIME-Version: 1.0 To: "Pedro Venda (SYSADM)" Cc: Andrew Morton , linux-kernel@vger.kernel.org, rnl@rnl.ist.utl.pt Subject: Re: ftp server crashes on heavy load: possible scheduler bug References: <200504261402.57375.pjvenda@rnl.ist.utl.pt> <20050429050833.6b3d805b.akpm@osdl.org> <200504291521.08711.pjvenda@rnl.ist.utl.pt> In-Reply-To: <200504291521.08711.pjvenda@rnl.ist.utl.pt> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1495 Lines: 41 Pedro Venda (SYSADM) wrote: > On Friday 29 April 2005 13:08, Andrew Morton wrote: > >>"Pedro Venda (SYSADM)" wrote: >> >>>We've made some changes on our ftp server, and since that it's been >>>crashing frequently (everyday) with a kernel panic. >>> >>>[...] >>> The netconsole log was surprising - "kernel BUG at kernel/sched.c:2634!" >> >>Strange. It'd be interesting to try disabling CONFIG_4KSTACKS. Also, >>please add this to get a bit more info. > > hi, > > I'll try that. Should I do it with or without preemption? The CONFIG_4KSTACKS is a more likely suspect than the preemption, actually. When I read the post from Andrew I remembered some discussion about this and reiserfs, and searched my archives for it: http://marc.theaimsgroup.com/?l=linux-kernel&m=108680778325490&w=2 I would start with turning them both off to have a stable working system. If after that you feel that your life is too boring and you want to live dangerously, you might try with CONFIG_PREEMPT=y. If you really want the full adrenaline rush, then go wild with CONFIG_PREEMPT_BKL=y too :) -- Paulo Marques - www.grupopie.com All that is necessary for the triumph of evil is that good men do nothing. Edmund Burke (1729 - 1797) - 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/