RMI Activity Threads Lock GC o/p

[Y Srinivas Ramakrishna]

...

> Back to the CMS vs. ParallelOldGC, is there a technical description anywhere
> on the difference between these two Old Generation Parallel 
> Collectors? I
> know that they are tightly associated with their respective Young Generation
> Collectors (UseParNewGC and ParallelGC respectively) but beyond that, 
> I am
> not sure I understand what ParallelOldGC does.

Unfortunately, there is no parallel compacting collector for CMS in the current product. See
Jon's blog for a diagram illustrating the way these collectors are structured/connected:-

http://blogs.sun.com/jonthecollector/entry/our_collectors

-- ramki