On Mon, Dec 1, 2014 at 11:07 PM, Jason Wee <peich...@gmail.com> wrote:

> Hi Rob, any recommended documentation on describing
> explanation/configuration of the JVM heap and permanent generation ? We
> stucked in this same situation too. :(
>

The archives of this list are chock full of explorations of various cases.
Your best bet is to look for a good Aaron Morton reference where he breaks
down the math between generations.

I swear there was a blog post of his on this subject, but the best I can
find is this slidedeck :

http://www.slideshare.net/aaronmorton/cassandra-tk-2014-large-nodes

=Rob

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