One of the greatest performance tools today for any aspiring systems engineer, or even your average joe, is the program called "top". It's a very useful tool that can tell you a lot of information about your system, it's current performance, system loads and more at a single glance.
But there's a lot of people out there who really don't know how to use it, or even understand what it's telling you. So in this short tutorial, I'll be introducing you to top and what it can do for you. The knowledge it will provide you is powerful.
To get started with understanding top, it helps to see an example of what you can expect to get from the program when you run it. Here's an example of the output produced by top: