Re: [PATCH 0/5] multiple block allocation to current ext3

[Mingming Cao]

On Wed, 2006-01-11 at 11:43 -0800, Andrew Morton wrote:
> Mingming Cao <cmm@xxxxxxxxxx> 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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