A value of type
NSQuality, which controls how aggressively the system schedules the activity.
- macOS 10.10+
The default value is
NSQuality. If you upgrade the quality of service above this level, the system schedules the activity more aggressively. The default value is the recommended value for most activities. See Configure Scheduler Properties. For information about quality of service, see Prioritize Work at the Task Level in Energy Efficiency Guide for Mac Apps.