javakaffee

Adam Bien just posted a short how-to describing how to start finding memory leaks with JDK 6.

The short excerpt:
1. Start your java application with the additional parameter -agentlib:hprof=heap=dump,file=/tmp/hprof.bin,format=b,depth=10
2. Dump the heap into a file with jmap -dump:format=b,file=/tmp/java_app-heap.bin ${process-id}
3. Visualize the heap with jhat -J-Xmx326m /tmp/java_app-heap.bin. Jhat will start a web server at port 7000, so you can point your browser to http://localhost:7000 and start investigating.