visualvm supports GlassFish
By alexismp on Jan 16, 2008
If JConsole was one of your reasons for moving to Java 5, you'll probably like VisualVM. This recent project is building on top of the NetBeans profiler technology (née JFluid) to provide a NetBeans Platform-powered standalone tool to monitor Java VMs. This tool strikes an interesting balance between monitoring, profiling, and troubleshooting tools. Some plugins such as the MBeans browser are already available from its update center.
VisualVM Milestone 1 is now available and it has support for some applications including GlassFish which means that profiling Java EE applications can happen quite fast by ignoring application server implementation code, with instrumenting only the user code. VisualVM does require Java 6 (Mac users, SoyLatte doesn't seem to save you this time).