about +UseCompressedOOPS in 64bit JVM

[Li Li]

   for 64bit JVM, if heap usage is less than 4GB, it should enable this
option. it can reduce memory usage and performance(for cpu cache). What if
the JVM use large memory?
   http://lists.apple.com/archives/java-dev/2010/Apr/msg00157.html this
post says enable it may slow application down.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.openjdk.java.net/pipermail/hotspot-gc-use/attachments/20120315/505a7528/attachment.html