The amount of time the system has been awake since the last time it was restarted.
SDKs
- iOS 4.0+
- macOS 10.6+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.0+
Framework
- Foundation
Declaration
var systemUptime: TimeInstance Propertysystem
system
See Also
Getting Computer Information
var processorThe number of processing cores available on the computer.
var activeThe number of active processing cores available on the computer.
var physicalThe amount of physical memory on the computer in bytes.
Beta Software
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.
Learn more about using Apple's beta software