Commonly used system monitoring tools in Linux systems

With the rapid development of cloud computing, big data, artificial intelligence and other technologies, Linux system has become one of the most commonly used operating systems in today's Internet industry. To better understand system usage and performance bottlenecks, it is often necessary to use a range of system monitoring tools. This article will introduce some commonly used system monitoring tools.

1. top

top is one of the most basic monitoring tools in Linux, which can display the currently running processes of the system and the usage of system resources in real time. Through the top command, you can understand key performance indicators such as CPU, memory, disk IO, etc., and you can also view and operate currently running processes. Enter the top command in the terminal to open the top tool.

2. vmstat

vmstat can display various indicator information of CPU, memory, disk IO and system scheduling. It is a relatively comprehensive and commonly used command line tool in Linux. It is generally used to detect internal bottlenecks in the system, such as whether the CPU usage is too high, whether the system memory is too small, etc. Enter the vmstat command in the terminal to open the vmstat tool, and set the time interval with the -t parameter.

3. nmon

nmon is a fast and efficient performance monitoring tool that can monitor CPU, memory, disk IO, network and other system indicators in real time. nmon is specially designed for IBM AIX and Linux systems, provides very detailed data, and can also export the data to Excel for analysis. Enter nmon in the terminal to open the nmon tool.

4. iostat

iostat is one of the tools used to detect disk IO in Linux systems. It can measure the read and write speed, request queue, busyness, etc. of each disk in the system. Monitor. Enter the iostat command in the terminal to open the iostat tool.

5. #sar

sar is the abbreviation of System Activity Report, which is a command line tool used to generate system performance data reports. Through sar, you can view historical data and trends of various key performance indicators, such as CPU usage, memory usage, disk IO, network traffic, process status, etc. Enter the sar command in the terminal to open the sar tool.

6. tcpdump

tcpdump is a command line tool used to capture network data packets. It can monitor and analyze network traffic, similar to Wireshark. Using tcpdump, you can check whether there are abnormal network requests, whether the network connection is normal, and communication quality issues. Enter the tcpdump command in the terminal to open the tcpdump tool.

7. strace

strace is a command line tool used to track and debug system calls. It can monitor the system calls of the process and signal transmission and other information. Through strace, you can view the calling process of the application and help analyze application problems. Enter the strace command in the terminal to open the strace tool.

Summary

There are many system monitoring tools used in Linux systems, and each tool has its unique functions and usage scenarios. It is very important for Linux system administrators and developers to understand the usage of these tools and their advantages and disadvantages. By using these tools, you can better manage and maintain the system and ensure system stability and performance.

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