JVisualVM
JVisualVM is a tool that provides a visual interface for viewing detailed information about Java applications while they are running on a JVM. It is bundled with JDK 6 update 7 and later.
When you use JVisualVM, it is safest to use the -Xshare:off command-line option. This option disables class sharing, and if it is not used there is a possibility that the JVM being profiled may crash.
For more information, see http://docs.oracle.com/javase/7/docs/technotes/guides/visualvm/.
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