On Fri, 24 Jul 2009, Tristan Ball wrote:

I've used 8K IO sizes for all the stage one tests - I know I might get
it to go faster with a larger size, but I like to know how well systems
will do when I treat them badly!

The Stage_1_Ops_thru_run is interesting. 2000+ ops/sec on random writes,
5000 on reads.

This seems like rather low random write performance. My 12-drive array of rotating rust obtains 3708.89 ops/sec. In order to be effective, it seems that a synchronous write log should perform considerably better than the backing store.

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