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From Jonathan Ellis <>
Subject Re: concurrent reads
Date Tue, 13 Jul 2010 04:12:29 GMT
if you're not sure where your bottleneck is, you aren't hitting it
hard enough :)

On Mon, Jul 12, 2010 at 9:00 PM, Lee Parker <> wrote:
> 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?
> Lee Parker

Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support

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