[7u-dev] Request for approval: 8010738: G1: Output for full GCs with +PrintGCDetails should contain perm gen/meta data size change info

[Poonam Bajaj]

Requesting for approval for pushing the following fix to jdk7u-dev:

JDK-8010738  <https://bugs.openjdk.java.net/browse/JDK-8010738>: G1: Output for full GCs with +PrintGCDetails should contain perm gen/meta data size change info
Webrev:http://cr.openjdk.java.net/~poonam/8010738/webrev.00/
Reviewed By: Jon Masamitsu, Thomas Schatzl
Review thread: http://mail.openjdk.java.net/pipermail/hotspot-gc-dev/2014-April/009931.html

Problem and fix: With JDK7 G1GC when we use -XX:+PrintGCDetails option, PermGen
information does not get printed in the Full GC logs as shown below:
[Full GC 16M->16M(20M), 0.7055536 secs]
    [Eden: 0.0B(1024.0K)->0.0B(1024.0K) Survivors: 0.0B->0.0B Heap:
16.7M(20.0M)->16.7M(20.0M)]

PermGen info should also get printed with Full GC info similar to what
other garbage collectors report. These changes are backport of the fix
in jdk8 where MetaSpace info gets printed in the Full GC logs.


Thanks,
Poonam