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

I would recommend taking a look at Arthas tool open sourced by Alibaba.

It contains a bunch of useful commands that can help you debug your production code:

• Dashboard: Overview of Your Java Process
• SC: Search Class Loaded by Your JVM
• Jad: Decompile Class Into Source Code
• Watch: View Method Invocation Input and Results
• Trace: Find the Bottleneck of Your Method Invocation
• Monitor: View Method Invocation Statistics
• Stack: View Call Stack of the Method
• Tt: Time Tunnel of Method Invocations

Example of the dashboard: