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From Jonathan Ellis <>
Subject Re: cassandra freezes
Date Thu, 25 Feb 2010 04:17:17 GMT
On Wed, Feb 24, 2010 at 8:46 PM, Santal Li <> wrote:
> BTW: Somebody in my team told me, that if the cassandra managed data was too
> huge( >15x than heap space) , will cause performance issues, is this true?

It really has more to do with what your hot data set is, than absolute size.

Once any system becomes i/o bound because the hot set can't be cached
in os buffers, you're going to be in trouble, there's nothing magic
about that. :)


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