安装Nmon - Terminal System Monitor for Linux

What is nmon?

nmon is a systems administrator, tuner, benchmark tool. It can display the CPU, memory, network, disks (mini graphs or numbers), file systems, NFS, top processes, resources (Linux version & processors) and on Power micro-partition information. -https://packages.debian.org/bullseye/nmon

Installation

1. Log into the Linux device
2. Run the following commands in a terminal window:
   # update software repositories
   sudo apt update
   # install software updates
   sudo apt upgrade -y
   # install nmon
   sudo apt install nmon -y
   # launch nmon
   nmon
3. Use the different keyboard shortcuts to show/hide various monitors

   c = CPU monitor
   m = memory monitor
   d = disk monitor
   n = network monitor
   t = process monitor
   + = slower update interval
   - = faster update interval