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Date:      Mon, 2 Oct 2000 17:20:48 -0700
From:      Jason Evans <jasone@canonware.com>
To:        Steve Kargl <sgk@troutmask.apl.washington.edu>
Cc:        freebsd-smp@freebsd.org
Subject:   Re: witness code status?
Message-ID:  <20001002172048.J58256@canonware.com>
In-Reply-To: <200010030011.e930Be940283@troutmask.apl.washington.edu>; from sgk@troutmask.apl.washington.edu on Mon, Oct 02, 2000 at 05:11:40PM -0700
References:  <20001002164139.I58256@canonware.com> <200010030011.e930Be940283@troutmask.apl.washington.edu>

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On Mon, Oct 02, 2000 at 05:11:40PM -0700, Steve Kargl wrote:
> 
> Shoot, I was afraid you's say the above.  I haven't been able to
> convince this machine to give me a crash dump for further analysis.
> I'll keep trying because this repeatable here.
> 
> The KDEBUG option isn't documented in NOTES, but I noticed it strewn
> through kern_mutex.c.  Will enabling this option provide more
> information that can help track this done?

Hmm, I don't know what KDEBUG is for.  However, you should definitely
define the SMP_DEBUG option if you haven't already.  I've been building
kernels for a while now with the following additional pertinent options:

options		INVARIANTS
options		INVARIANT_SUPPORT
options		DIAGNOSTIC
options		SMP_DEBUG
options		WITNESS

As for not being able to get a crash dump, I've been using ddb/gdb, so I'm
not of much help there.

Jason


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