From owner-freebsd-questions Thu Dec 16 21:15:35 1999 Delivered-To: freebsd-questions@freebsd.org Received: from mail.enteract.com (mail.enteract.com [207.229.143.33]) by hub.freebsd.org (Postfix) with ESMTP id 4CF9314D90 for ; Thu, 16 Dec 1999 21:15:29 -0800 (PST) (envelope-from dscheidt@enteract.com) Received: from shell-1.enteract.com (dscheidt@shell-1.enteract.com [207.229.143.40]) by mail.enteract.com (8.9.3/8.9.3) with SMTP id XAA48346; Thu, 16 Dec 1999 23:15:28 -0600 (CST) (envelope-from dscheidt@enteract.com) Date: Thu, 16 Dec 1999 23:15:27 -0600 (CST) From: David Scheidt To: scott Cc: freebsd-questions@freebsd.org Subject: Re: system freeze: how to debug? In-Reply-To: <19991216235723.A9224@chronis.pobox.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 16 Dec 1999, scott wrote: > I have a 3.3 release system that keeps freezing when stressed. It is > running postfix, and that's all. When it freezes, there is no kernel > dump, no console message, no log messages. It simply will not respond > to anything, console or otherwise, except to recycle the power. > > How do I get this system to be more informative about what is causing > this problem? Put options DDB in your kernel config, config -g your kernel, make and install it, and wait for it to hang. When it does, use CTRL-ALT-ESC to break into the debugger. Type trace , copy down the output, then do panic continue . Save the crashdump, and post the stack trace. There are instructions on this in section 22 of the handbook < http://www.freebsd.org/handbook/kerneldebug.html > or your local copy. You probably should read that first. Regards, David Scheidt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message