Linux lookup Java process consumes high CPU cause

Linux lookup Java process consumes high CPU cause

1. Find a process

Top View Process Usage resources

It is obvious that Java's two processes 22714,12406 consume too much CPU.

2. Find Threads

Use Top-h-P <pid> to view thread usage

3. Finding stack information for Java

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 will find the problematic code.

The rest is analyzing the reason and modifying the code.

This article is from the "32 Krypton" blog, please be sure to keep this source http://10672221.blog.51cto.com/10662221/1983809

Linux lookup Java process consumes high CPU cause