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Date: Mon, 23 Aug 2004 23:00:50 +0200
From: Pawel Worach <pawel.worach@telia.com>
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To: Doug White <dwhite@gumbysoft.com>
References: <20040822115345.Y94593@carver.gumbysoft.com>
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cc: freebsd-current@freebsd.org
Subject: Re: PLEASE TEST: IPI deadlock avoidance patch
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Doug White wrote:
> Hey folks,
> 
> If you have a reasonably fast i386 or amd64 multiprocessor and/or
> hyperthreading machine and are experiencing reproducible hangs during -j
> buildwords and other highly parallel operations, please try this patch:
> 
> http://people.freebsd.org/~dwhite/smp_rv_mtx.patch
> 

Worked like a charm, Four way Xeon box with a -j256 buildstone using 
SCHED_ULE. Thanks for tracking this down!

-- 
Pawel