RFR: bug: Timely Reducing Unused Committed Memory

[Rodrigo Bruno]

Hi Thomas,

Did you ever notice an improvement in heap usage after the first such
> attempt?
> There should be none except for memory held by j.l.ref.References.
>
> What I want to get at, as a later improvement, we could think of just
> skipping those then (as except as mentioned for the j.l.ref.References
> issue there would be "no" difference).
>
>
I didn't devise any experiments to measure memory usage. However, we can
obviously do that.

The new version of the patch regarding

http://openjdk.java.net/jeps/8204089

can be found at

http://www.gsd.inesc-id.pt/~rbruno/webrev.zip

This version already includes idle compaction (Full GC is optional) and
your previous comments as well.

Let me know what you think.

cheers,
rodrigo
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