deadlocks with SMP and Pentium 3
kris at obsecurity.org
Thu Oct 27 10:35:55 PDT 2005
On Thu, Oct 27, 2005 at 12:56:35PM +0200, Bjoern Koenig wrote:
> 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.
Try with KDB_STOP_NMI (called STOP_NMI) in 7.0.
> 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.
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