Activity Monitor

[D.Dave]

The CPU History display window shows activity by displaying red and green dots in a histogram format. Can anyone tell me what the colors mean?

 

[NoBoMac]

Red is for OS workload, green is user usage. No dots, CPU(s) are in idle.

 

[D.Dave]

Thanks for the info. Where does one gather this kind of information? Not, it seems, readily apparent within the OS.

 

[Weaselboy]

https://support.apple.com/en-us/HT201464

This might help you.

 

[D.Dave]

Thanks. I'll keep Apple support in mind for future needs.