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Table of Contents
Use the top command to quickly view
Use htop to view more clearly (need to install)
Use mpstat to view detailed statistics
Home System Tutorial LINUX How to check CPU usage in Linux

How to check CPU usage in Linux

Jul 09, 2025 am 12:34 AM
linux cpu usage

Use the top command to quickly view real-time CPU usage, focusing on observing the %Cpu(s) line; 2. Install htop to obtain a clearer visual interface and support mouse operations; 3. Use mpstat to obtain detailed CPU usage statistics, suitable for analyzing performance trends. These three methods are suitable for rough viewing, intuitive display and in-depth analysis of scenarios.

How to check CPU usage in Linux

Want to know how to check the CPU usage of Linux system? In fact, there are many methods, and most of them are built into the system without additional software installation.

How to check CPU usage in Linux

Use the top command to quickly view

top is one of the most commonly used and intuitive ways. Enter at the terminal:

How to check CPU usage in Linux
 top

You will see a real-time update interface that includes the overall CPU usage and resource usage of each process. Focus on %Cpu(s) line, which will display the percentage of user state, system state, idle state, etc.

If you just want to see if there is any exception load, this command is the most suitable. Press q to exit.

How to check CPU usage in Linux

Use htop to view more clearly (need to install)

Although top is very convenient, its interface is a bit simple. If you are willing to install one more tool, htop is more friendly:

 sudo apt install htop # Debian/Ubuntu
htop

Not only does it distinguish colors clearly, it can also view the usage of each CPU core through mouse operations, making it more friendly to novices.

If the server is a multi-core CPU, htop can help you see at a glance whether a certain core is full while others are idle.

Use mpstat to view detailed statistics

If you need to analyze CPU usage trends over a certain period of time, you can use mpstat . It belongs to the sysstat toolkit. First, confirm whether it is installed:

 mpstat 1 5

The meaning of this command is: sample once per second, and collect five times in total. The results will list the usage details of each CPU, such as %usr (user state), %sys (system state), %iowait (wait for I/O), etc.

This is especially useful for troubleshooting performance issues, such as finding that there are too many system calls or the user program is too resource-consuming.


Basically these are the methods. Different scenarios are suitable for different commands. Usually, you can use top and mpstat for detailed analysis. You can also install htop without losing money if you want to visually experience it.

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