On Sat, 22 May 2010, Brian wrote:

The -xen helped me determine that it  was disks c7d0 and c7d1 that were slower.

You may be right, but is not totally clear since you really need to apply a workload which is assured to consistently load the disks. I don't think that 'scrub' is necessarily best for this. Perhaps the load issued to these two disks contains more random access requests.

Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
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