Linux lookup Java process consumes high CPU cause

1. Find process Top view process Resource Usage It is clear that Java's two processes 22714,12406 consume too much CPU.  2. Find thread use top-h-P <pid> View Thread occupancy 3. Find Java stack information convert thread ID to hexadecimal #printf%x 15664#3d30 Then use Jstack to query the thread's stack information syntax: Jstack <pid> | Grep-a thread ID (hex) jstack <pid> | Grep-a 3d30 This finds the problematic code. The rest is analyzing the reason and modifying the code.

Linux lookup Java process consumes high CPU cause