Request for review - 8022817: CMS should not shrink if compaction was not done

Jon Masamitsu jon.masamitsu at oracle.com
Mon Aug 12 12:09:26 PDT 2013


8022817: CMS should not shrink if compaction was not done

If UseCMSCompactAtFullCollection is turned off, a full GC that is done 
in the foreground but does
not compact should not shrink the generation. In that case  a mark-sweep 
was done so the free space
is maintained in freelists (not as a contiguous area at the end of the 
generation) and shrinking for
freelists is not implemented.

http://cr.openjdk.java.net/~jmasa/8022817/webrev.00/

Thanks.

Jon
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