From owner-freebsd-questions@FreeBSD.ORG Tue Jul 5 17:03:10 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 3142E16A41C for ; Tue, 5 Jul 2005 17:03:10 +0000 (GMT) (envelope-from casey@phantombsd.org) Received: from phantombsd.org (dsl231-036-158.sea1.dsl.speakeasy.net [216.231.36.158]) by mx1.FreeBSD.org (Postfix) with ESMTP id DC3B043D64 for ; Tue, 5 Jul 2005 17:03:07 +0000 (GMT) (envelope-from casey@phantombsd.org) Received: by phantombsd.org (Postfix, from userid 1004) id 322A0102F13; Tue, 5 Jul 2005 10:03:04 -0700 (PDT) Received: from tomcat.phantombsd.org (tomcat.phantombsd.org [192.168.1.6]) by phantombsd.org (Postfix) with ESMTP id 0463D102E94; Tue, 5 Jul 2005 10:03:02 -0700 (PDT) From: Casey Scott To: freebsd-questions@freebsd.org Date: Tue, 5 Jul 2005 10:03:01 -0700 User-Agent: KMail/1.6.2 References: In-Reply-To: MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200507051003.01890.casey@phantombsd.org> X-Spam-Checker-Version: SpamAssassin 3.0.4 (2005-06-05) on eagle.phantombsd.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=5.0 tests=ALL_TRUSTED autolearn=failed version=3.0.4 Cc: Chris Burchell Subject: Re: How to diagnose crashes? 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: Tue, 05 Jul 2005 17:03:10 -0000 > My FreeBSD 5.3-RELEASE box seems to be spontaneously restarting from > time to time. > > I have not yet contacted the colo facility to determine if it's a power > issue, but wonder if anyone can help me out in how to diagnose whether > or not it's a server crash and not a power problem. > > Where should I look for tips / hints that might help me determine the > cause of a crash that forced a reboot? > > Thanks, > Chris > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to > "freebsd-questions-unsubscribe@freebsd.org" Did the reboot occur during a high network load? In my case, the reboots seem to be related to the kernel TCP/IP stack. The box reboots under network load way too often. I don't suspect any other hard problem with it. It handle kernel builds and makeworlds w/o incident. MemTest86 did not find any problems with the memory. I have seen some other posts on this list about this issue. The posters thought it was a problem with SMP kernels. I compiled a uniproc kernel and just had another spontaneous reboot last night! After looking for .core, you may want to capture /dev/console messages to a log file. I am assuming since the box is colo'd, you don't have console access. You may still miss some output though. Casey