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From Peter Schuller <>
Subject Re: concurrent reads
Date Tue, 13 Jul 2010 06:07:41 GMT
> Has anyone experimented with different settings for concurrent reads?  I
> have set our servers to 4 ( 2 per processor core ).  I have noticed that
> occasionally, our pending reads will get backed up and our servers don't
> appear to be under too much load.  In fact, most of the load appears to be
> from GC.  Is 3 per processor core too much?  Does it matter if it is an AMC
> vs Intel processor?  How does processor clock speed or cache play into this
> setting?

Increase concurrency until you're able to either saturate CPU or
saturate the disk subsystem. Note that the more disks you have, the
more concurrency you'll need to fully utilize them.

/ Peter Schuller

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