On Mon, 8 Feb 2010, Richard Elling wrote:

If there is insufficient controller bandwidth capacity, then the controller becomes the bottleneck.

We don't tend to see this for HDDs, but SSDs can crush a controller and
channel.

It is definitely seen with older PCI hardware.

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