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.
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.

Use the top command to quickly view
top
is one of the most commonly used and intuitive ways. Enter at the terminal:

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.

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.
The above is the detailed content of How to check CPU usage in Linux. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undress AI Tool
Undress images for free

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

The steps to add a new hard disk to the Linux system are as follows: 1. Confirm that the hard disk is recognized and use lsblk or fdisk-l to check; 2. Use fdisk or parted partitions, such as fdisk/dev/sdb and create and save; 3. Format the partition to a file system, such as mkfs.ext4/dev/sdb1; 4. Use the mount command for temporary mounts, such as mount/dev/sdb1/mnt/data; 5. Modify /etc/fstab to achieve automatic mount on the computer, and test the mount first to ensure correctness. Be sure to confirm data security before operation to avoid hardware connection problems.

Have problems uploading files in Google Chrome? This may be annoying, right? Whether you are attaching documents to emails, sharing images on social media, or submitting important files for work or school, a smooth file upload process is crucial. So, it can be frustrating if your file uploads continue to fail in Chrome on Windows PC. If you're not ready to give up your favorite browser, here are some tips for fixes that can't upload files on Windows Google Chrome 1. Start with Universal Repair Before we learn about any advanced troubleshooting tips, it's best to try some of the basic solutions mentioned below. Troubleshooting Internet connection issues: Internet connection

sudo stands for "substituteuserdo" or "superuserdo", allowing users to run commands with permissions of other users (usually root). Its core uses include: 1. Perform system-level operations such as installing software or editing system files; 2. Accessing protected directories or logs; 3. Manage services such as restarting nginx; 4. Modify global settings such as /etc/hosts. When using it, the system will check the /etc/sudoers configuration and verify the user password, provide temporary permissions instead of continuously logging in as root, ensuring security. Best practices include: only when necessary, avoid blindly executing network commands, editing sudoers files with visudo, and considering continuous operations.

To manage Linux user groups, you need to master the operation of viewing, creating, deleting, modifying, and user attribute adjustment. To view user group information, you can use cat/etc/group or getentgroup, use groups [username] or id [username] to view the group to which the user belongs; use groupadd to create a group, and use groupdel to specify the GID; use groupdel to delete empty groups; use usermod-aG to add users to the group, and use usermod-g to modify the main group; use usermod-g to remove users from the group by editing /etc/group or using the vigr command; use groupmod-n (change name) or groupmod-g (change GID) to modify group properties, and remember to update the permissions of relevant files.

In Linux systems, 1. Use ipa or hostname-I command to view private IP; 2. Use curlifconfig.me or curlipinfo.io/ip to obtain public IP; 3. The desktop version can view private IP through system settings, and the browser can access specific websites to view public IP; 4. Common commands can be set as aliases for quick call. These methods are simple and practical, suitable for IP viewing needs in different scenarios.

HighCPUusageinIISworkerprocessesistypicallycausedbyinefficientcode,poorconfiguration,orunexpectedtrafficpatterns.Todiagnosetheissue,firstidentifythespecificw3wp.exeprocessusinghighCPUviaTaskManagerorResourceMonitoranddetermineitsassociatedapplication

As a pioneer in the digital world, Bitcoin’s unique code name and underlying technology have always been the focus of people’s attention. Its standard code is BTC, also known as XBT on certain platforms that meet international standards. From a technical point of view, Bitcoin is not a single code style, but a huge and sophisticated open source software project. Its core code is mainly written in C and incorporates cryptography, distributed systems and economics principles, so that anyone can view, review and contribute its code.

When the computer CPU occupies 99%, it should first use the task manager to locate the highly occupant processes, such as System, chrome.exe, etc.; secondly, close unnecessary startup items and services, such as Realtek, Steam and other third-party services; then update the driver and system patches, especially graphics card and network card drivers; finally check viruses and malware, use antivirus software or tools to check in depth, and if it is still not resolved, consider reinstalling the system.
