XFS: Abysmal write performance because of excessive seeking (allocation groups to blame?)

Emmanuel Florac eflorac at intellique.com
Sat Apr 7 03:49:12 CDT 2012


Le Fri, 06 Apr 2012 18:28:37 -0500 vous écriviez:

> Creating four 60 drive RAID10 arrays, let alone 60 drive RAID6
> arrays, would be silly.

From my experience, with modern arrays don't make much of a difference.
I've reached decent IOPS (i. e. about 4000 IOPS) on large arrays of up
to 46 drives provided there are enough threads -- more threads than
spindles, preferably.

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