On 2004.08.22 12:05:39 -0700, 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 With stock CURRENT my Dual XEON test system has hung most of the time when I did a parallel buildworld. Since I applied this patch last night the system has completed 12 -j100 buildworlds, and it's still going on, without any problems :-). Thanks to all the people who have worked on this problem! :-) BTW. these tests were with the 4BSD scheduler, I'm going to try to switch to ULE soon and se how that works out. -- Simon L. Nielsen FreeBSD Documentation Team
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