Which Java thread is hogging the CPU?

Question

Let\'s say your Java program is taking 100% CPU. It has 50 threads. You need to find which thread is guilty. I have not found a tool that can help. Currently I use the follo

Answer 1

An option you could consider is querying your threads for the answer from within application. Via the ThreadMXBean you can query CPU usage of threads from within your Java application and query stack traces of the offending thread(s).

The ThreadMXBean option allows you to build this kind of monitoring into your live application. It has negligible impact and has the distinct advantage that you can make it do exactly what you want.