Re: [git patches] IDE update

Jens Axboe
2005-07-05T13:15:20Z

On Tue, 2005-07-05 at 15:02 +0200, Ondrej Zary wrote:
> > Ok, looks alright for both. Your machine is quite slow, perhaps that is
> > showing the slower performance. Can you try and make HZ 100 in 2.6 and
> > test again? 2.6.13-recent has it as a config option, otherwise edit
> > include/asm/param.h appropriately.
> >
>
> I forgot to write that my 2.6.12 kernel is already compiled with HZ 100
> (it makes the system more responsive).
> I've just tried 2.6.8.1 with HZ 1000 and there is no difference in HDD
> performance comparing to 2.6.12.

OK, interesting. You could try and boot with profile=2 and do

# readprofile -r
# dd if=/dev/hda of=/dev/null bs=128k
# readprofile > prof_output

for each kernel and post it here, so we can see if anything sticks out.

--
Jens Axboe <axboe@suse.de>