Date: Fri, 04 Jul 2008 20:25:04 +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: <486E6B00.10208@FreeBSD.org> In-Reply-To: <486E4C20.7050102@omc.net> References: <486E4C20.7050102@omc.net>
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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
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