Date: Thu, 16 Dec 1999 23:15:27 -0600 (CST) From: David Scheidt <dscheidt@enteract.com> To: scott <scott@chronis.pobox.com> Cc: freebsd-questions@freebsd.org Subject: Re: system freeze: how to debug? Message-ID: <Pine.NEB.3.96.991216230745.11417A-100000@shell-1.enteract.com> In-Reply-To: <19991216235723.A9224@chronis.pobox.com>
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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 <return>, copy down the output, then do panic <return> continue <return>. 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
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