Obtaining CPU thread usage in Java

Question

I have a question around getting CPU utilization for a given JNI block. I\'m making some intensive CPU computation in the underlying C++ JNI native method. I\'m in the proce

Answer 1

On Linux, this method may help you:

• Run kill -3 to get the thread dump. Thread dump will be added standard output.
• Open the dump and search for the thread you're interested in. (You can search using class name)
• Get the thread PID (it's in hex) and convert it to decimal.
• Run top command.
• Press Shift-H to enable Threads View
• Identify the thread using decimal value you obtained above. You can see cpu / memory usage of your thread there.