The Activity Monitor icon will change to the monitor you select. If you look at the icon in the Dock, you will see activity indicators to show how busy that component is.

alexr":2wuz0l9n said: Well, Activity Monitor can show either memory or processor usage in its dock icon already. Just ctrl-click its dock icon and choose what you want from the 'Dock Icon' submenu.

This Activity tab made its first appearance last month but is now rolling out widely to both Android and iOS users. The same bell icon also exists in the main YouTube app, providing information on ...