Stefan Lambrev wrote: > Hi, > > Attilio Rao wrote: >> 2007/10/16, Peter Schuller <peter.schuller_at_infidyne.com>: >> >>>>> Just in case you missed some debugging knobs: can you retest with >>>>> RELENG_7? (not -current). >>>>> >>> I will, but I did disable INVARIANTS/WITNESS. I was afraid I had >>> missed something else that I am not aware of; diffing the kernel conf >>> did not indicate this was the case. >>> >> >> Recent NetBSD benchmarks, showed that malloc debugging is a very big >> bottleneck for sybench, so you should remove it as well. >> Also, benchmarks posted where just in regard of cached datas, so >> without any need to do I/O from disks. >> >> Attilio >> >> >> > If you run real RELENG_7 it have to be without debug in kernel, and in > malloc, > nothing really to tune here :) > > Just update your source tree to the latest RELENG_7 recompile and etc. > > http://lists.freebsd.org/pipermail/freebsd-performance/2007-May/002664.html > - here are my results with mysql with FreeBSD 6.2, > you can use it to see what I did and when I reach best performance. > > From what I remember to achieve good results you have to: > 1) cp /usr/local/share/mysql/my-large.cnf /var/db/mysql/my.cnf > (or use huge if you have more one dual core CPUs) I don't know what settings this has, but I use http://people.freebsd.org/~kris/scaling/my.cnf KrisReceived on Tue Oct 16 2007 - 16:59:14 UTC
This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:39:19 UTC