about +UseCompressedOOPS in 64bit JVM

[Jon Masamitsu]

On 03/15/12 00:19, Li Li wrote:
>    for 64bit JVM, if heap usage is less than 4GB, it should enable 
> this option. it can reduce memory usage and performance(for cpu 
> cache). What if the JVM use large memory?
> http://lists.apple.com/archives/java-dev/2010/Apr/msg00157.html this 
> post says enable it may slow application down.

I think that the responses to that thread make the relevant points.   
Many applications
benefit from compressed oops but some don't.  In the end you just need 
to try it with
your application and see if it helps.

>
>
>
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