Re: Optimize RAID0 for max IOPS?

[Wolfgang Denk <wd@xxxxxxx>]

Dear Dave Chinner,

In message <20110125083643.GE28803@dastard> you wrote:
>
> Oh, despite $subject being "RAID0" the filesystems being tested are
> on RAID5 and RAID6 with very small chunk sizes on slow SATA drives.
> This is smelling like a case of barrier IOs on software raid on
> cheap storage....

Right. [Any way to avoid these, btw?]  I got side-tracked by the
comments about the new (to me) delaylog mount option to xfs; as the
results were not exactly as exp[ected I though it might be interesting
to report these.

But as the subject says, my current topic is tuning RAID0 to avoid
exactly this type of bottleneck; or rather looking for tunable options
on RAID0

Best regards,

Wolfgang Denk

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