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SubjectRe: md RAID over SATA performance
J.A. Magallon wrote:

>
> On 2004.09.03, J.A. Magallon wrote:
>
>> Hi all...
>>
>> I am buildin an array with a linux box, and I run 2.6.8.1 (not stock,
>> but
>> the mandrake cooker version).
>>
>> Problem is that i get really poor performance.
>

Try:
blockdev --getra /dev/sda1
blockdev --getra /dev/md0

and if needed:
blockdev --setra 4096 /dev/sda1
blockdev --setra 4096 /dev/md0

Also if you use lvm:
blockdev --setra 4096 /dev/video_vg/video_lv
as appropriate.

Tune as needed :)

David
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