Activity Monitor: Quit a process
Some processes use more memory or require a higher percentage of the computer’s processing time than others. If your computer seems to be working more slowly than usual, you can use Activity Monitor to quit a background process.
- Open Activity Monitor, in the Utilities folder in Launchpad.
- Select the process you want to quit.
- Click Quit Process.
- Do one of the following:
Click Quit. The process quits when it is safe to do so. If quitting the process could cause data loss or interfere with another application, the process doesn’t quit. This is the same as choosing File > Quit within an application.
Click Force Quit. The process quits immediately. If the process has open files, you may lose data. If the process is used by other applications or processes, those applications or processes could experience problems. To see if a process is used by another process, choose “All Processes, Hierarchically” from the Show pop-up menu in the toolbar.