On Tue, May 09, 2006 at 03:34:59AM +0300, Sven Petai wrote: > > Hmm, with this patch mysql 4.1 seems to crash at startup. I haven't > > yet had time to investigate. Is anyone else seeing this? > > > > Seems to run fine here with 4.1.18 on amd64, but doesn't seem to make much > difference though. > > I ran the tests again on the 8 core machine with and without rwatsons patch > and this time with 6 tests for each setting and generated graphs: > http://bsd.ee/~hadara/debug/mysql4/stats.html > > thr + select smack dynamics with the patch really do look quite interesting > > PS > I'm currently running testround with rwatsons patch + > http://people.freebsd.org/~csjp/kern_descrip.c.1145074052.diff + mysqld > change davidxu suggested. > Are there any other patches out there that I should try ? Sorry, I meant http://people.freebsd.org/~csjp/sys.mpsafe.fileops.1145896495.diff instead of that patch. Also try turning down HZ to 100, and changing the wakeup()s to wakeup_one() in sys/filedesc.h. A mutex profiling trace from the 8 core machine will also be very interesting. Kris
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