low sysbench scores on 8 core server
kris at FreeBSD.org
Fri Jul 4 18:25:05 UTC 2008
Lutz Rabing wrote:
> 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:
> software versions used:
> - mysql-server-5.1.25
In my tests mysql 5.1 has much worse performance than 5.0.
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