Date: Tue, 24 Aug 2004 14:14:52 +0200 (CEST) From: Lukas Ertl <le@FreeBSD.org> To: Doug White <dwhite@gumbysoft.com> Cc: freebsd-current@FreeBSD.org Subject: Re: PLEASE TEST: IPI deadlock avoidance patch Message-ID: <20040824141238.K3016@pcle2.cc.univie.ac.at> In-Reply-To: <20040823134538.D3016@pcle2.cc.univie.ac.at> References: <20040822115345.Y94593@carver.gumbysoft.com> <20040823134538.D3016@pcle2.cc.univie.ac.at>
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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@FreeBSD.org http://people.freebsd.org/~le/
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