How to see your Mac’s live performance in the Dock with Activity Monitor

Do you like to keep an eye on what’s going on with the vitals of your Mac? You can use the Activity Monitor app to see detailed information on the processes your Mac is running and how they affect the CPU, Memory, Energy, Disk, and Network.  .

While the app itself provides a lot of details, it can also give you an at-a-glance status indicator via its app icon in the Dock. You can change it so that it shows the overall condition of each component.
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