Linux vmstat Command: Pros and Cons

The vmstat command is a tool used to monitor system resource usage, primarily for viewing performance data related to memory, virtual memory, disk, CPU, etc. Its advantages include:

1. Easy to use: The vmstat command provides a simple way to display the usage of system resources, allowing users to obtain most key performance data by running just one command.
2. Good real-time performance: The vmstat command can display system resource usage in real-time, helping users promptly identify system performance issues and take appropriate measures.
3. Versatility: The vmstat command offers a wide range of options and parameters, allowing users to choose different parameters as needed to monitor various aspects of the system.

However, the vmstat command also has some drawbacks, including:

1. The statistical data is limited: the vmstat command only provides basic performance data and cannot offer more detailed analysis and performance diagnostic functions.
2. The user-friendliness needs improvement: The vmstat command may not be intuitive or easy to understand for users unfamiliar with the command line, requiring a certain learning curve.
3. Does not support graphical display: The vmstat command can only display performance data in a command line interface, and cannot provide a more user-friendly visual display like some graphical tools.