A Plethora of Java Performance Monitoring Tools...! :)

We have suddenly encountered a heavy demand for light-weight, easy-to-use tools to perform some "detective work" and diagnose Performance bottlenecks and the in-famous Out-Of-Memory Errors in Java environments like Tomcat Server instances, etc.

• A nice article on Stack-traces :- http://java.sun.com/developer/technicalArticles/Programming/Stacktrace/
• A very nice overview of Java Performance problems at a high-level and the tools available in Java to debug/track them :- http://java.sun.com/developer/technicalArticles/J2SE/monitoring/
• Then there are many tools like jhat, jmap, jstat, and the more popular visualGC tool, which internally uses jstat API's...

Our popular Java IDE, Eclipse, also has a new Memory Analzer tool---you can read a nice little article on it at :- http://blog.richeton.com/2009/06/12/memory-analysis-with-eclipse-35/

But of all these tools, the one I liked the most is the newest VisualVM tool---which, unfortunately is provided  ONLY with JDK 1.6 update 7 and above as of now...

This tool has a very nice, unified Interface, with the provision of Installing other plugins to enable monitoring things like Glassfish, Tomcat, etc..

It also provides very neat features to generate Heap-dumps, try to perform Garbage Collection (GC), and plugins &/or tabs integrating the display of  jconsole, visualGC parameters, etc.

Just decided to share this Thread-Dump---of one of the millions of threads running in my mind today...! :)


Purr-haps, it will help some-one...some-where...some-how..some-when..?? :))

Cheers,

"raghu"