Simple usage of Host performance analysis tool Nmon in Linux system

Nmon is a tool for collecting performance data and analysis of Aix or Linux hosts and is easy to use. There are two main, one is the Nmon collection Data tool, the general name is nmon_**, for example nmon_aix5.3, another is the analysis result tool, it is an Excel file, the name is: Nmon analyser v33a.xls.
Nmon displays all important performance tuning information on one screen and updates it dynamically. You can also capture the same data to a text file for later analysis and drawing of the report.
The Nmon_analyser tool takes the files generated by the Nmon Performance tool as input, converts them to a Microsoft Excel spreadsheet, and automatically generates the appropriate graphics.
The Nmon tool can provide AIX and Linux performance experts with the ability to monitor and analyze performance data, including:
CPU usage
Memory usage
Kernel statistics and running queue information
Disk I/O speed, transfer and read/write ratios
Free space in the file system
Disk adapters
Network I/O speed, transmission and read/write ratios
Page space and page speed
Processes that consume the most resources
Computer details and resources
IBM doesn't provide formal support for the tool, and you have to take the risk yourself when you use it, but you can get a lot of valuable performance statistics from it. Among them, the Nmon for Linux version has opened the source code on July 27, 2009.

Take a look at the basic installation use of Nmon
Nmon (abbreviated for Nigel's monitor) is a tool for displaying system performance information.

The code is as follows:
$ sudo apt-get install Nmon
$ nmon

Nmon can display information with NETWROK,CPU, memory, and disk usage.

Nmon Display CPU Information (press C)

Nmon Display Network information (press N)

Nman Display disk information (press D)