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Activity Monitor User Guide for Mac - Apple Support
See how much energy your Mac is using
You can find out how much energy your Mac is using, and see which apps or processes are using the most energy.
Monitor CPU activity
See the CPU activity on your Mac in the Activity Monitor window or as a live graph right in the Dock.
Close apps and processes
When your system is acting sluggish or simply not responding, use Activity Monitor to locate and force quit troublesome apps or processes.
See memory usage
You can monitor the amount of system memory being used on your Mac in Activity Monitor.
To explore the Activity Monitor User Guide, click Table of Contents at the top of the page, or enter a word or phrase in the search field.
Activity Monitor User Guide
- Welcome
- View information about processes
- View CPU activity
- View GPU activity
- View memory usage
- View energy consumption
- View disk activity
- View network activity
- View cache activity
- Run system diagnostics
- Quit a process
- Change how often information is updated
- Check if your Mac needs more RAM
- Copyright and trademarks
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