CentOS 7 Performance Monitoring Guide

In CentOS 7, you can use the following tools for basic system performance monitoring and optimization:

1. Monitor system performance using the top command: The top command allows you to real-time view the system’s usage of CPU, memory, disk and other resources, in order to quickly identify performance bottlenecks.
2. Monitor system performance using the vmstat command: The vmstat command can provide performance data such as virtual memory and disk I/O, helping users understand the overall performance of the system.
3. Monitor system performance using the sar command: The sar command can record performance data such as CPU, memory, and disk usage of the system. Users can analyze and optimize performance by viewing the sar log files.
4. Monitor disk performance using the iostat command: The iostat command can display data on disk I/O performance, including disk read/write speeds, disk utilization, and other information, assisting users in analyzing disk performance issues.
5. Monitor memory performance using the free command: The free command can display information on the system’s memory usage, including total memory, used memory, and available memory, helping users understand the memory usage situation.

In order to improve system performance, appropriate optimization measures can be taken based on monitoring data, such as adjusting system parameters, optimizing application code, and increasing hardware resources. Additionally, installing other performance monitoring tools like sysstat and nmon can also be considered to analyze and optimize system performance issues more deeply.