Re: PLEASE TEST: IPI deadlock avoidance patch

From: Lukas Ertl <le_at_FreeBSD.org>
Date: Tue, 24 Aug 2004 14:14:52 +0200 (CEST)
On Mon, 23 Aug 2004, Lukas Ertl wrote:

> On Sun, 22 Aug 2004, Doug White wrote:
>
>> 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
>
> Looks good here - several of my Xeon boxes that were subject to deadlocks 
> have survived -j4 buildworlds and other load situations with this patch.

OK, it seems I shouted out too early.  '-jX' buildworlds go fine, but my 
news server (heavy disk and network traffic) still locks up within one day 
of uptime.  It's a Dual Xeon with HTT, SCHED_4BSD, ADAPTIVE_GIANT, and no 
WITNESS or INVARIANTS.

cheers,
le

-- 
Lukas Ertl                         http://homepage.univie.ac.at/l.ertl/
le_at_FreeBSD.org                     http://people.freebsd.org/~le/
Received on Tue Aug 24 2004 - 10:15:01 UTC

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