How to Install and Use nmon Monitoring Tool on CentOS 7
This guide shows how to download, extract, and run the lightweight nmon performance monitoring tool on CentOS 7, including the exact commands to fetch the package, choose the correct binary, start the utility, and view CPU and memory statistics using interactive keys.
Overview
nmon is a free, lightweight system performance monitoring tool that is easy to install and consumes minimal resources, making it popular on AIX and Linux platforms.
Download the package
Fetch the latest nmon tarball from SourceForge using wget:
wget http://sourceforge.net/projects/nmon/files/nmon16d_x86.tar.gzExtract the archive
Unpack the tarball and list the available binaries to choose the one that matches your OS:
tar xf nmon16d_x86.tar.gz
lsThe extraction yields directories such as nmon_x86_64_centos7, nmon_x86_64_rhel6, and many others for different Linux distributions and architectures.
Run the appropriate binary
Navigate to the directory and execute the binary that corresponds to CentOS 7 (64‑bit in this example): ./nmon_x86_64_centos7 The tool starts in interactive mode, displaying a real‑time dashboard.
Interactive testing
While nmon is running, press c to view detailed CPU information and m to display memory usage.
After confirming the tool works, the installation is complete.
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