Linux Administration Cookbook

atop

atop (Advanced System and Process Monitoring)

To begin, run atop normally:

$ atop

You should see something like this:

This gives us some good information, specifically the system and process activity since boot, before it rotates onto a rolling display of the activity over the previous 10 seconds. In other words, 10 seconds later, it looks like this:

Furthermore, atop can be used to store data not just of the current boot, but also periodically.

Enable the atop service as follows:

$ sudo systemctl enable atop --now

You will now find that ...