Category: JMX

Monitor Java Application with VisualVM

9/7/2013

It is not uncommon that you need to watch the runtime performance of a Java application on a server. In this post, I'll show you how to set up a target JVM so you can monitor its cpu, heap memory, threads usage from a specific JMX client - VisualVM. VisualVM is similar to JConsole, a JMX-compliant monitoring tool, but is more advanced.

To use a JMX client, the setup you need to do first are:

On the Target server where JVM runs, you need to enable JMX Agent for the JVM.
On the local machine where you want to monitor your Java application from, you need a JMX client. For this post, I chose VisualVM.
To prevent other JMX client from accessing your JMX Agent, you want to turn on authentication when your JMX client connects to your JMX Agent.

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Enable JMX Agent for JVM

9/6/2013

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With JMX agent enabled for a JVM, you can use a JMX Client (JConsole or VisualVM) to tap into your JVM to monitor its performance and memory usage at runtime. Your java runtime is not enabled with JMX by default unless you explicitly specify to turn it on.

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Monitor Java Application with VisualVM

Enable JMX Agent for JVM

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