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

Stefan Ring stefanrin at gmail.com
Tue Apr 10 09:05:09 CDT 2012


> BTW congratulations for limiting your RAID6 set to 4+2, and
> using a relatively small chunk size compared to that chosen by
> many others.

Interestingly, it performs better with a larger stripe size, though.
Probably because it’s better able to combine writes when the blocks
are larger.



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