On Sun, Aug 22, 2004 at 12:05:39PM -0700, 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: Just a follow-up to my off-list message and another data point, with this patch I no longer get deadlocks, however I now get random data corruption. The first time, it managed to complete the installworld and I didn't notice anything until trying to portupgrade Xorg failed. It turns out that the installed ranlib coredumped when run, but the one in /usr/obj worked fine. After that I was not able to successfully buildworld again. Every time one of the source files would inevitably end up corrupted with blocks of garbage, even after removing /usr/src entirely and re-cvsupping. Disabling the second processor or falling back to an older kernel (one from before the IPI hangs started) both fix the problem. CraigReceived on Thu Aug 26 2004 - 12:53:28 UTC
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