Jordan Russell <[EMAIL PROTECTED]> writes:
> Iustin Pop wrote:
>> Maybe it's because md doesn't support barriers whereas the disks
>> supports them? In this case some filesystems, for example XFS, will work
>> faster on raid1 because they can't force the flush to disk using
>> barriers.
>
> It's an ext3 partition, so I guess that doesn't apply?
>
> I tried remounting /dev/sda2 with the "barrier=0" option (which I assume
> disables barriers, looking at the source), though, just to see if it
> would make any difference, but it didn't; the database build still took
> 31 minutes.
Compare the read ahead settings.
MfG
Goswin
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