java process memory usage is higher than Xmx

[Aaron Daubman]

>
>
> I've tried jmap but the output doesn't say anything about high memory
> usage. FYI, the java process use a large heap (90GB), but the actual memory
> usage ($ top) is about 99GB.
>
>
Is this the RES column from top?

You might also see:
http://plumbr.eu/blog/why-does-my-java-process-consume-more-memory-than-xmx

Although I would not expect permgen and stack to sum up to 9G...
Are you using JNI, bytebuffers or anything else that would allocate
off-heap memory?
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