How running a background task takes a tiny fraction of second, although the task itself takes seconds or minutes, and why it’s run on E cores.
CoreDuet
How macOS schedules tasks like making automatic Time Machine backups, from property list to transactions between DAS and CTS.
The story of how Mac OS X went from cron, to launchd, and ended up with Duet Activity Scheduler, to schedule background activities like backups.
Prior to 10.4, Mac OS X used cron, then scheduling became part of the job of launchd. Later Apple added a new subsystem, Duet Activity Scheduler, which continues to evolve.
By default, your Mac’s cooling fans run at full blast. Only the control system slows them down when it is safe to do so. How to diagnose and fix its problems.
If Apple manages the performance of iOS, does it do the same with macOS? What is there to stop that from being used against us?
The Eclectic Light Company 