How to use Linux to monitor system performance

With the popularity of computer applications, system performance monitoring has gradually become an essential skill. As an open source operating system, Linux is widely popular both on servers and personal computers. This article will introduce you to how to use Linux to monitor system performance.

1. Use the top command

The top command is the most basic command for monitoring system performance in Linux. Through the top command, we can understand the system's CPU, memory, disk, process and other information in real time. Enter the top command in the terminal to view system-related information. The process list is sorted in descending order by CPU usage by default. Press "Shift M" to sort the process list by memory usage.

2. Use ps command

ps command is a command in Linux to view process information. It can display a list of currently running processes, as well as related PID, CPU, memory, running time and other information. Enter the ps command in the terminal to view the system's process information.

3. Use the free command

The free command is used to display the memory usage of the system. Using this command, we can view the system's total memory, used memory, free memory and other information. Enter the free command in the terminal to check the memory usage of the system.

4. Use the iotop command

The iotop command is a command in Linux to view the disk I/O status. By using the iotop command, we can understand the current disk write and read operations. Enter the iotop command in the terminal to view the I/O status of the disk.

5. Use the sar command

The sar command is one of the most powerful commands for monitoring system performance in Linux. By using the sar command, we can view the system's CPU usage, memory usage, disk usage, network usage and other information. Enter the sar command in the terminal to view system-related information.

6. Use the extension tool htop of the top command

htop is an extension tool of the top command, which provides richer functions for monitoring system performance. Through the htop command, we can check the system's CPU usage, memory usage, process status, disk usage and other information. Enter the htop command in the terminal to view system-related information.

The above are the commands commonly used in Linux to monitor system performance. Through these commands, we can understand the system's CPU, memory, disk, network, etc., so as to discover and solve system performance problems in a timely manner. At the same time, we can also save this monitoring information for later analysis and optimization.

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