Date: Mon, 8 May 2006 20:42:03 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Sven Petai <hadara@bsd.ee> Cc: freebsd-performance@freebsd.org, Kris Kennaway <kris@obsecurity.org>, David Xu <davidxu@freebsd.org>, current@freebsd.org Subject: Re: Fine-grained locking for POSIX local sockets (UNIX domain sockets) Message-ID: <20060509004203.GA55852@xor.obsecurity.org> In-Reply-To: <200605090335.00451.hadara@bsd.ee> References: <20060506150622.C17611@fledge.watson.org> <200605081843.31825.davidxu@freebsd.org> <20060508184322.GA49344@xor.obsecurity.org> <200605090335.00451.hadara@bsd.ee>
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[-- Attachment #1 --] 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 [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (FreeBSD) iD8DBQFEX+VbWry0BWjoQKURAgm/AKD2YwlrftVlpb7kN7QeIQIJKl2bmACg78i2 abDlSzbEkADZRGjNfX8iNk0= =5TPT -----END PGP SIGNATURE-----
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