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

Try looking at the Hot Thread Detector plugin for visual VM -- it uses the ThreadMXBean API to take multiple CPU consumption samples to find the most active threads. It's based on a command-line equivalent from Bruce Chapman which might also be useful.