Command-line tools like “top” make it difficult to see CPU usage across multi-process applications (like Apache and Chrome), spikes over time, and memory usage. Vtop is a free and open-source activity monitor for the command line. It’s written in node.js and can be easily extended.
If you haven’t already got Node.js, then download that first, then run:
sudo npm install -g vtop
This is pretty simple too.
It is quite a cool application to have in our tool chest.