Re: Question about memory size and performance

Thanks a lot for all reply, I don't have a lot of knowledge about VM thus I
don't have much idea about

-XX:MaxHeapFreeRatio=<value>intx1.3.11.4.01.4.11.4.21.5.01.6.0heap free
percentage (default 70)
Per my understanding, that is 70% of VM memory can be free, and 30% have
data ( not sure if that include perm space for class definition ). For my
job, I am developing Eclipse RCP application, where just the eclipse can
take 600MB of memory, then I start my application, it is easy to take an
other 400MB; If I running 2 version of data in same setup, it already 2G
memory...

Now I change that to 50, the eclipse take about 400MB memory, which is huge
improvement! And I don't feel eclipse run slower, however, look like I
cannot set a more small size on this value :-/

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