FreeBSD MySQL still WAY slower than Linux
Michael Schuh
michael.schuh at gmail.com
Mon Jun 20 10:45:11 GMT 2005
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
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