Date: Fri, 06 Oct 2006 15:16:28 +0200 From: Alexander Leidinger <Alexander@Leidinger.net> To: Divacky Roman <xdivac02@stud.fit.vutbr.cz> Cc: freebsd-performance@freebsd.org, Jerry Bell <jbell@stelesys.com> Subject: Re: Help with improving mysql performance on 6.2PRE Message-ID: <20061006151628.egmzstaiqsw48kk8@webmail.leidinger.net> In-Reply-To: <20061006075738.GA64854@stud.fit.vutbr.cz> References: <3731.71.56.92.181.1160009571.squirrel@www.stelesys.com> <20061006075738.GA64854@stud.fit.vutbr.cz>
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Quoting Divacky Roman <xdivac02@stud.fit.vutbr.cz> (from Fri, 6 Oct =20 2006 09:57:38 +0200): > On Wed, Oct 04, 2006 at 08:52:51PM -0400, Jerry Bell wrote: >> I have a Dell PE2950 with 2 dual core 3.73Ghz processors and 4G of ram. >> I've looked through some of the lists here and have seen super-smack >> results in the 42k qps range on a 2 dual core opteron system. I'm able t= o >> get up to about 34k with the wide at the back of my server whilest rubbin= g >> the side of it. >> >> Here's what I've done: >> built both mysql 5.0 and 5.1 from ports with build_static and >> optimazations on. >> changed the clock to TSC >> >> added the following to my /etc/libmap.conf file: >> [mysqld] >> libc_r.so.5 libthr.so.2 >> libc_r.so.6 libthr.so.2 >> libthr.so.2 libthr.so.2 >> libpthread.so.1 libthr.so.2 >> libpthread.so.2 libthr.so.2 >> >> And this is about the best result I get: >> 2950# super-smack -d mysql select-key-mysql.smack 10 10000 >> Query Barrel Report for client smacker1 >> connect: max=3D200ms min=3D0ms avg=3D 20ms from 10 clients >> Query_type num_queries max_time min_time q_per_s >> select_index 200000 0 0 34440.88 >> >> >> Are there any other optimizations I need to do to mysql or freebsd? I'm >> still not 100% convinced that I've done everything I need to use libthr >> instead of libpthread. > > on UP people recomend to use TSC instead of acpi timer He uses the TSC already... but nobody suggested the gettimeofday() =20 wrapper so far: http://wiki.freebsd.org/MySQL Bye, Alexander. --=20 Success is the sole earthly judge of right and wrong. =09=09-- Adolf Hitler, "Mein Kampf" http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID =3D B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID =3D 72077137
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