From owner-freebsd-stable@FreeBSD.ORG Thu Dec 18 10:44:47 2003 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DCE5016A4CE for ; Thu, 18 Dec 2003 10:44:46 -0800 (PST) Received: from psa1.123dns.net (psa1.123dns.net [217.158.94.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id F38C043D1D for ; Thu, 18 Dec 2003 10:44:44 -0800 (PST) (envelope-from freebsd@alivewww.com) Received: (qmail 55166 invoked from network); 18 Dec 2003 18:44:43 -0000 Received: from dogbert.adsl.mahoosive.net (HELO ninja) (81.5.128.162) by 54.psa1.123dns.net with RC4-MD5 encrypted SMTP; 18 Dec 2003 18:44:43 -0000 From: "Alasdair Lumsden" To: Date: Thu, 18 Dec 2003 18:44:44 -0000 Message-ID: <004501c3c597$011edfc0$a2800551@ninja> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.4024 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Importance: Normal In-Reply-To: <005401c3c575$674d4ab0$41c3c3cf@office.sihope.com> Subject: RE: SMP forcing crash/reboot in 4.9-STABLE X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Dec 2003 18:44:47 -0000 > We have a 4-way P3/500 Xeon system running FreeBSD. We had been running > 4.8-STABLE for a number of months with SMP enabled and no issues. Around > 25-November we moved to 4.9-STABLE. The system ran without SMP enabled > until Tuesday, when we enabled SMP and APIC_IO, rebuilt the kernel, and > rebooted. Then about every 30 minutes the system would reboot. We moved > back to single-processor (using the source updated on 25-Nov) and it has > worked since. > > So we synced source last night and tried enabling SMP again this morning. > We are still seeing the same problem. We have switched back to a non-SMP > kernel (from last night's sync) and are running fine. > > Has anyone else seen this? Any ideas where to look? There is nothing in > messages or dmesg about the crash, and I haven't been able to catch it at > the console to see if there's a message there. We recently purchased a Dual Xeon 2.8GHz machine, and stuck FreeBSD 4.9-STABLE on it. The Kernel has SMP+APIC enabled, and HyperThreading is disabled in the system's bios. The server was put to use in a production environment, and is handling quite a high volume of web traffic. Since it was put into service almost a week ago, it has crashed randomly 2 or 3 times. Of course, since this is a new server, it's impossible to say whether our two problems are linked, or whether this is a hardware/configuration problem. If the problem persists, I'll recompile with a non-SMP enabled kernel and see if this fixes the problem. If it does, I'll be sure to let you know. Unfortunately since the times between crashes seem random, it might be a week or two until I have any conclusive answers.