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From Brandon Williams <dri...@gmail.com>
Subject Re: reads are slow
Date Tue, 23 Feb 2010 17:51:39 GMT
On Tue, Feb 23, 2010 at 11:33 AM, kevin <kevincastiglione@gmail.com> wrote:

> I have given 10GB RAM in cassandra.in.sh.
>         -Xmx10G \
> i have increased KeysCachedFraction to 0.04. i have two different drives
> for commitlog and data directoy.
> i have about 3 million rows.
> what can i do to improve read speed?
> thanks a lot!
>

Since 0.5 doesn't have row caching, 10G is probably too much to give the JVM
and is hampering the OS cache.  Try between 2-6GB instead and see if that
helps.

-Brandon

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