Very bad FreeBSD SCSI RAID5 write speed performance

Martin Blapp mb at imp.ch
Fri Nov 28 01:05:18 PST 2003


Hi all,

The performance issue with the IBM serveraid 5i has been solved. I've
committed fixes which enabled the Cache as sideeffect.

We have now ~40MB speed during write, ~60MB during read which is
acceptable again.

Thanks for the pointers and for your responses.

Martin

Martin Blapp, <mb at imp.ch> <mbr at FreeBSD.org>
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