On Tue, May 09, 2006 at 06:18:11PM +0300, Sven Petai wrote: > On Tuesday 09 May 2006 03:42, Kris Kennaway wrote: > > 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. > > I preformed additional tests with the settings you suggested, > updated graphs are available _at_ > http://bsd.ee/~hadara/debug/mysql4/stats.html Very useful, thanks! I imagine we'll be discussing this issue in detail at bsdcan over the next few days. Kris
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