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When your Java process starts to spin your CPU, you must immediately analyze the issue using the following two commands and obtain the invaluable information required to tackle the issue. This is done based on the process ID (pid).

1. jstack <pid> > thread-dump.txt

2. ps -C java -L -o pcpu,cpu,nice,state,cputime,pid,tid > thread-usage.txt


   Tip
   Tip: OS X users can alternatively use the command ps M <PID> instead.

These commands provide you with the thread-dump.txt file and the thread-usage.txt file. After obtaining these two files, do the following.

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