Richard Schroeder wrote:
>
> Help,
> I have set up RAID-0 on my Linux Redhat 6.0. I am using RAID-0
> (striping) with two IDE disks (each disk on it's own IDE controller).
> No problems in getting it running. However, my tests show I/O
> performance seems to be worse than on a "normal" non-RAID filesystem. I
> have tried different chunk-sizes to no avail. I must be missing
> something. Shouldn't I be seeing a slight performance gain?
>
Have you (U)DMA enabled? If not, I guess the CPU load imposed by reading
simultaneously is too high, so performance is in fact lost? Just
thinking aloud, never had nor ever will be troubling myself with that
IDE crap, always use SCSI :-)
Marc
