Date: Sun, 20 May 2007 22:06:22 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Walter Vaughan <wvaughan@steelerubber.com> Cc: freebsd-current@freebsd.org Subject: Re: 8 cores of fun Message-ID: <20070521020622.GB46734@xor.obsecurity.org> In-Reply-To: <4650E899.2070001@steelerubber.com> References: <4650E899.2070001@steelerubber.com>
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On Sun, May 20, 2007 at 08:32:25PM -0400, Walter Vaughan wrote: > I've got a few days to experiment with an 8 core box, and someone pointed > this page out to me http://people.freebsd.org/~kris/scaling/mysql.html > before I purchased the box. > > Looking at the patch http://people.freebsd.org/~jeff/tophalf.diff it > doesn't appear to be patchable with 7-CURRENT. A more scalable alternative was committed a while ago. > What I am interested in is Hi-speed Java (really wanted to work with Java6) > and Postgresql-8.2. > > Does anyone have any pointers for optimizing Posgresql & Java on AMD-64 > with 8 cores? I have not used java, but would be very interested to see how it goes. The most important thing to do with pgsql is disable the process title updating (there is a config option in 8.2). Also use ULE with sched.kern.pick_pri=0. Comparisons against other OSes on a suitably interesting benchmark are most useful to us, otherwise if you have a particular workload and performance expectation we can try to work with that. Kris
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