Using the five tabs across the top of the window, you can visit displays that show information on running processes sorted by CPU usage (“CPU”), memory usage (“Memory”), energy usage (“Energy”), disk usage (“Disk”), and network usage (“Network”). Once the “Activity Monitor” window opens, you will see a list of all the processes running on your Mac, similar to this: When the “Spotlight Search” bar appears, type “activity monitor,” and hit “Return.” Or you can click the “Activity Monitor.app” icon in the Spotlight results. To open “Spotlight,” click the small “magnifying glass” icon in your menu bar (or press Command+Space). One of the fastest ways to open Activity Monitor is by using Spotlight.
