Idle: The percentage of CPU capability not being used.User: The percentage of CPU capability currently used by apps that you opened, or by the processes those apps opened.System: The percentage of CPU capability currently used by system processes, which are processes that belong to macOS.More information is available at the bottom of the CPU pane: This information and the information in the Energy pane can help identify processes that are affecting Mac performance, battery runtime, temperature, and fan activity. The CPU pane shows how processes are affecting CPU (processor) activity:Ĭlick the top of the “% CPU” column to sort by the percentage of CPU capability used by each process. Applications in the last 8 hours: Apps that were running processes in the last 8 hours.Selected Processes: Processes that you selected in the Activity Monitor window.Windowed Processes: Processes that can create a window.Inactive Processes: Running processes that are sleeping.Active Processes: Running processes that aren’t sleeping. ![]() Other User Processes: Processes that aren’t owned by the root user or current user.System Processes: Processes owned by macOS.My Processes: Processes owned by your macOS user account.All Processes Hierarchically: Processes that belong to other processes, so you can see the parent/child relationship between them.The View menu also allows you to choose which processes are shown in each pane: ![]() Use the five category tabs at the top of the Activity Monitor window to see how processes are affecting your Mac in each category.Īdd or remove columns in each of these panes by choosing View > Columns from the menu bar. The processes shown in Activity Monitor can be user apps, system apps used by macOS, or invisible background processes. ![]() Open Activity Monitor from the Utilities folder of your Applications folder, or use Spotlight to find it. This article describes some of the commonly used features of Activity Monitor, a kind of task manager that allows you see how apps and other processes are affecting your your CPU, memory, energy, disk, and network usage. Activity Monitor shows the processes that are running on your Mac, so you can manage them and see how they affect your Mac's activity and performance.
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