From owner-freebsd-questions@FreeBSD.ORG Mon Sep 12 16:14:43 2005 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 382C716A41F for ; Mon, 12 Sep 2005 16:14:43 +0000 (GMT) (envelope-from bsd@bathnetworks.com) Received: from lmail.bathnetworks.co.uk (mail.bathnetworks.com [84.92.24.252]) by mx1.FreeBSD.org (Postfix) with ESMTP id 4EC7B43D45 for ; Mon, 12 Sep 2005 16:14:41 +0000 (GMT) (envelope-from bsd@bathnetworks.com) Received: (qmail 18786 invoked by uid 510); 12 Sep 2005 16:15:21 +0100 Received: from 84.92.24.252 by lmail.bathnetworks.co.uk (envelope-from , uid 508) with qmail-scanner-1.24-st-qms (clamdscan: 0.86.2/1032. spamassassin: 3.0.2. perlscan: 1.24-st-qms. Clear:RC:0(84.92.24.252):SA:0(-2.9/5.0):. Processed in 0.384115 secs); 12 Sep 2005 15:15:21 -0000 X-Spam-Status: No, hits=-2.9 required=5.0 X-Antivirus-MYDOMAIN-Mail-From: bsd@bathnetworks.com via lmail.bathnetworks.co.uk X-Antivirus-MYDOMAIN: 1.24-st-qms (Clear:RC:0(84.92.24.252):SA:0(-2.9/5.0):. Processed in 0.384115 secs Process 18779) Received: from mail.bathnetworks.com (HELO ?84.92.24.252?) (bsd@bathnetworks.com@84.92.24.252) by lmail.bathnetworks.co.uk with SMTP; 12 Sep 2005 16:15:20 +0100 From: Robert Slade To: "freebsd-questions@freebsd.org" In-Reply-To: <1126428977.1803.48.camel@lmail.bathnetworks.co.uk> References: <1126428977.1803.48.camel@lmail.bathnetworks.co.uk> Content-Type: text/plain Message-Id: <1126538120.18211.4.camel@lmail.bathnetworks.co.uk> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 (1.4.6-2) Date: Mon, 12 Sep 2005 16:15:20 +0100 Content-Transfer-Encoding: 7bit Subject: Re: PL 5000 Random Reboots X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 12 Sep 2005 16:14:43 -0000 On Sun, 2005-09-11 at 09:56, Robert Slade wrote: > Hi, > > I have been having problems with random reboots when using the SMP > Kernel on the above Quad processor machine. It occurs with bot 5.4 and > 6.0B4. It does not happen with a single processor kernel, well not in > the last 12 hours. > > Searching the mailing list and google has thrown up a number of possible > causes: > > a. there was an issue with the SMP kernel under load in 5.3 but the > errata says the fix was incorporated in 5.4; > > b. there appears to be some problems with with the ACPI with some > machines. Unfortunately, the SMP kernel needs ACPI so turning it off is > not an option. > > c. there appears to be an issue with some network cards and USB with > interupt 'storms'. The machine has 2 network cards both identified in > dmesg as Compaq Netelligent 10/100, athough only one is in use. I am > getting tl0: tx underrun -- increasing tx threshold to 512 bytes when > using vncserver to run xwindows with KDE which maybe related. > > It looks like the most likely cause is ACPI, SMP or both, but as ACPI > relates to interups, the interup 'storm' issue could be impacting. > However I do not know enough about the workings of ACPI etc to be able > to judge this. It looks to me that there is a number of things I could > do to isolate the problem: > > 1. try building a kernel without SMP but with ACPI to see what effect > that has. Question is is this possible with 6.0B4? > > 2. if the above gives a problem try changing the network cards for > another type. > > 3. fix the underrun issue but I am not sure how to do that. > > I would be grateful for any comments ideas on the way forward as the > machine is quite slow without the SMP kernel. > > Thanks > > Rob I know replying to you own messages is a sign of something or other. I have tried the machine with SMP disabled in the kernel and ACPI only. It has been running for over 22 hours with any problems. Next step - trying a new kernel with SMP enabled. Rob