Explore solutions to abnormal CPU and Sys usage in Linux

[Title] Explore solutions to abnormal CPU and Sys usage in Linux

In Linux systems, abnormal CPU and Sys usage often make the system run slowly. Or it may be unstable and cause trouble to users. This article will explore the causes of these anomalies and provide some solutions, as well as specific code examples.

CPU usage exception

CPU usage exception is usually caused by too many processes running or a certain process occupying too many CPU resources. To solve this problem, you can view the processes running in the system and their CPU usage, and then adjust or optimize as needed.

The following are some commonly used commands to check the CPU usage and end the process that takes up too high CPU resources:

# 查看当前CPU占用情况
top

# 查看所有进程的CPU占用情况
ps aux

# 结束指定进程（其中PID为进程ID）
kill -9 PID

If you find that a process has been taking up high CPU resources, you can use the above command to locate it. And end the process to solve the problem of abnormal CPU usage.

Sys usage exception

Sys usage exception usually refers to the situation where the system call usage is too high. This may be due to a problem with a certain module or driver in the system kernel. To solve this problem, you can try to upgrade the system kernel or repair related problem drivers.

The following are some commonly used commands to check the system calls and try to solve the problem of abnormal Sys usage:

# 查看系统调用情况
strace -p PID

# 尝试升级系统内核
sudo apt-get update
sudo apt-get upgrade

# 尝试修复问题驱动程序
sudo modprobe -r driver_module
sudo modprobe driver_module

Using the above commands, you can check the system calls, upgrade the system kernel and repair problem drivers. , thereby solving the problem of abnormal Sys occupation.

To sum up, abnormal CPU and Sys usage are common problems in Linux systems, but through reasonable adjustment and optimization, these abnormal situations can be effectively solved. We hope that the solutions and code examples provided in this article can help readers solve related problems and improve the stability and performance of the system.

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