What are the "new" defaults for CMS??

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I believe I asked this a few weeks ago but did not get an answer, so here goes again.
In the Java7 release notes, it says:

Area: HotSpot
Standard/Platform: JDK 7
Synopsis: The default out-of-the-box heap size and shape parameters for the concurrent mark sweep collector (CMS) have been modified. The new settings take advantage of faster platforms that have been introduced since JDK 6 was released. Like the other collectors in HotSpot, CMS will now use the available physical memory on the platform to size its heap, while attempting to shape that heap to keep pause times associated with minor collections "reasonable". The specific shape of the heap may be platform-depenent in other ways as well.
Users can override all or some of these default settings by explicitly sizing or shaping the heap, AKA "heap tuning", to suit their specific needs.
For more information on the default settings for this and other garbage collectors, please see the Heap Tuning Guide for JDK 6.
RFE: 6896099

But the exact changes are not spelled out. Can I get some specifics please?

Thx
Fino

Sent from Fino's iPhone 4S
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