PLEASE TEST: IPI deadlock avoidance patch
Lukas Ertl
le at FreeBSD.org
Tue Aug 24 05:15:01 PDT 2004
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/
More information about the freebsd-current
mailing list