Messages in this thread | | | Date | Fri, 8 Jul 2005 13:45:07 +0200 | From | Jens Axboe <> | Subject | Re: [git patches] IDE update |
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On Fri, Jul 08 2005, Ingo Molnar wrote: > > * Jens Axboe <axboe@suse.de> wrote: > > > But! I used hdparm -t solely, 2.6 was always ~5% faster than 2.4. But > > using -Tt slowed down the hd speed by about 30%. So it looks like some > > scheduler interaction, perhaps the memory timing loops gets it marked > > as batch or something? > > to check whether that could be the case, could you try: > > nice -n -20 hdparm -t /dev/hdc > > does that produce different results?
Same result, see my next mail, it turned out to be a read-ahead bug.
-- Jens Axboe
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