I'm having trouble understanding the information displayed by
htop the popular replacement for the Linux top command.
In the above screen shot, there are many java instances listed, but only the parent one uses CPU time. What are the others?
Why do the CPU utilisation bars show such busy cores when the CPU% column shows not much happening across all processes? In fact, they move without correlation most of the time.
Why is the Load Average, top right, which I assume is a 3 step history, so low when the cores are almost always green and looking busy?
Would someone be so kind to explain how to read this information?