On Wed, 2006-01-11 at 11:43 -0800, Andrew Morton wrote:
> Mingming Cao <[email protected]> wrote:
> >
> > # time ./filetst -b 1048576 -w -f /mnt/a
> > 2.6.14 2.6.15
> > real 0m21.710s 0m25.773s
> > user 0m0.012s 0m0.004s
> > sys 0m14.569s 0m15.065s
>
> That's a big drop.
>
> Was it doing I/O, or was it all from pagecache?
>
It's doing IO on a freshly created filesystem. It was running with AS io
scheduler. It seems DIO has no problem, and ext2 has no regression
either... Will keep you posted.
Mingming
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