FreeBSD MySQL still WAY slower than Linux

[Michael Schuh]

Hello,

i follows up these thread and i think you all digging on the false
possible error location......

I have made many performance tests with RELENG_4 related to RELENG_5
and DragonFly and Gentoo.

My results was that RELENG_5 is half as RELENG_4 fast by disk-access
(ata-related).

I have seen that RELENG_5 with GENERIC Kernel and only modified option HZ=2000.

the spread begind with Gentoo (mentoided from me as the slowest, but
errare humanum est)

Gentoo : 100% time consumption
RELENG_4: 67% time consumtion
DrangonFly Rel1.2 69-72% time consumption (i think preemtion)
RELENG_5 134% time consumtion

these tests are made on physically the same Hardware (real, not equal
system, same system, same disk, same RAM) with the command:

# cd /; /usr/bin/time dd if=/dev/zero bs=1024 count=1024k of=zerofile;
rm zerofile

the tests are made more then 3 times/period/system.
I have made the tests to the beginning of stable-5, and by the release 5.4.
after the Release from DragonFly.

By the first time i have made a mailing on stable, and i become the
answer thath these issues become fixed on RELENG_6.....

so i think you have to wait on the developers.... :-((

best regards

Michael