How to monitor a Java program using Jconsole?

java multithreading jconsole
Thinker picture Thinker · Mar 9, 2014 · Viewed 33k times · Source

I have written a program to print number from 1 to 200 using 2 threads.

Now I want to monitor this program using JConsole.

Basically I want to learn how to use JConsole for monitoring an application.

I searched google but couldn't find something useful.

How I can achieve this?

When I started jconsole.exe in bin folder. It asks for hostname and port number. Here in my case, there is none, I guess. Can somebody guide.

Answer

Salah picture Salah · Mar 9, 2014

You need to enable JMX by adding the following JVM arguments :

-Dcom.sun.management.jmxremote
-Dcom.sun.management.jmxremote.authenticate=false
-Dcom.sun.management.jmxremote.port=8484
-Dcom.sun.management.jmxremote.ssl=false

These parameters will allow any JMX monitoring tool to access and monitoring your application.

Also i suggest you to use visualVM its more powerful tool. some features for visualVM:

  • Provide a CPU profiling.
  • Provide all info about Threads.
  • Provide the JVM Heap and the memory states.
  • Provide Info about the GC activities.

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