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Date: Thu, 27 Oct 2005 12:56:35 +0200
From: Bjoern Koenig <bkoenig@cs.tu-berlin.de>
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To: Kris Kennaway <kris@obsecurity.org>
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Cc: current@freebsd.org
Subject: Re: deadlocks with SMP and Pentium 3
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Kris Kennaway wrote:

> You need to break to DDB, trace processes and examine lock state with
> commands like 'show alllocks' and 'show lockedvnods' to see what is
> going on.

Unfortunately the machine freezes completely and I can't break to the 
debugger anymore. It happens absolutely unforeseen, therefore I can't 
examine states shortly before it freezes. I run several instances of 
'unixbench shell' and 'ubench -c'; sometimes it takes a few seconds and 
sometimes 10 minutes until the machine stops working.

I like to except hardware failures, because FreeBSD 4.11 and Windows 
Server 2003 run under high load without problems for several hours.

I'll spend some more time.

Thanks
Björn