This deserves a place next to Brendan Gregg’s performance diagrams .
If you take top and put it on steroids, you get htop.
htop has an awesome visual interface that you can also interact with using your keyboard. The screen packs a lot of information which can be daunting to look at. I tried to find a nice infographic to explain what each number, value or color coded bars mean, but couldn’t find any. Hence I decided to make one myself over the Christmas break.