Date: Mon, 07 Jul 2008 11:43:19 +0200 From: Kris Kennaway <kris@FreeBSD.org> To: rabing@omc.net Cc: freebsd-performance@FreeBSD.org Subject: Re: low sysbench scores on 8 core server Message-ID: <4871E537.7060504@FreeBSD.org> In-Reply-To: <4871D784.1020809@omc.net> References: <486E4C20.7050102@omc.net> <486E6B00.10208@FreeBSD.org> <4871D784.1020809@omc.net>
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Lutz Rabing wrote: > Kris Kennaway schrieb: >> Lutz Rabing wrote: >>> hi, >>> >>> I did some testing an a supermicro 2 x 4 core xeon server under 64bit >>> "7.0-STABLE #1: Fri Jul 4". when we first tested the system under load >>> (2000 apache threads) the system performed bad compare to other dual >>> core systems under the same workload. >>> >>> the 8 core system had 0% idle time and almost 100% system load. I could >>> not find out what the load was. disk IO was close to zero during that >>> time. >>> >>> because of that I checked the sysbench results with this test: >>> >>> sysbench --test=oltp --mysql-socket=/tmp/mysql.sock --mysql-user=root \ >>> --max-requests=0 --max-time=60 --oltp-read -only=on --num-threads=$1 run >> See my tuning notes at: >> >> http://people.freebsd.org/~kris/scaling/mysql.html >> >>> software versions used: >>> - mysql-server-5.1.25 >> In my tests mysql 5.1 has much worse performance than 5.0. >> >> Kris >> >> >> . >> > > > hi kris, > > thanks for your response. going back to mysql-5.0.51a the 8core server > performed as expected. (sysbench oltp: 4335 with 8 threads) Good to know. Let's hope mysql get their act together with the next release ;-) Kris
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