The simple usage of nmon, a tool for host performance analysis under Linux system


Nmon is a tool to collect and analyze the performance data of Aix or Linux hosts. It is easy to use. There are two main tools. One is the tool for nmon to collect data, commonly known as nmon_ **, such as nmon_ Aix5.3, another tool for analyzing results, is an excel file named nmon analyzer v33a.xls.
Nmon displays all important performance optimization information on one screen and updates it dynamically. The same data can also be captured to a text file, which is convenient for later analysis and drawing of the report.
nmon_ The analysis tool takes the files generated by nmon performance tool as input, then converts them into Microsoft Excel spreadsheet and automatically generates the corresponding graphics.
Nmon tools can provide AIX and Linux performance experts with the functions of monitoring and analyzing performance data, including:
CPU utilization
Memory usage
Kernel statistics and run queue information
Disk I / O speed, transfer and read / write ratio
Free space in the file system
Disk adapter
Network I / O speed, transmission and read / write ratio
Page space and page speed
Processes that consume the most resources
Computer details and resources
IBM does not provide formal support for the tool, and you have to bear the corresponding risks when using it, but you can get a lot of valuable performance statistics from it. Among them, nmon for Linux version has been open source on July 27, 2009.

Take a look at the basic installation of nmon
Nmon (short for Nigel’s monitor) is a tool to display system performance information.

Copy code

The code is as follows:

$ sudo apt-get install nmon
$ nmon

20151029112248301.png (855×357)

Nmon can display information about netwrok, CPU, memory and disk usage.

Nmon displays CPU information (press c)
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Nmon displays network information (press n)
20151029112332630.png (768×159)

Nman displays disk information (press D)
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