Re: MySQL performance drop with FC2 kernels

[Satish Balay <balay fastmail fm>]

On Tue, 30 Nov 2004, N T wrote:

> I am seeing that performance using MySQL 4.1.7 drops by a significant
> amount if I use a FC2 kernel (2.6.8-1.521smp or 2.6.9-1.6_FC2smp)
> compared to running a stock 2.6.9 kernel downloaded from kernel.org.
> The vanilla kernel was compiled using the i686-smp config that FC2
> used. I see similar issues when running MySQL 4.0.xx. All MySQL
> versions were installed from the RPMs available from
> <http://www.mysql.com>.
> 
> The benchmark being used to measure performance was RUBiS
> <http://rubis.objectweb.org/>. While vanilla 2.6.9 can service ~220
> reqs/s, FC2's version of 2.6.9 can only deliver ~120 reqs/sec.
> 
> I have a Dell Poweredge with a hyperthreaded Pentium IV. However, I am
> not sure what other information might be relevant to narrow this
> problem. There was a thread on FedoraForum.org
> <http://www.fedoraforum.org/forum/archive/index.php/t-20064.html>
> about a similar problem but I did not see any resolution there.

How about trying linuxant kernel - and see the differences?
http://www.linuxant.com/driverloader/wlan/full/downloads-fc2-kernel-i686.php

Satish