How does XProtect Remediator scan your Mac once a day? What has gone wrong when it doesn’t appear to work? Explained from its property lists to its three different types of scan.
DAS
There’s normally more than 500 background activities, like Time Machine backups and XProtect Remediator scans, waiting for dispatch in the list maintained by DAS. How this works.
Since 2005, macOS has had the master launcher launchd and its LaunchAgents and LaunchDaemons. Then in 2014 Apple added Duet Activity Scheduler to run tasks when conditions are suitable.
How do the SMC and CoreDuet manage the systems in your Mac, and should you fiddle with them?
Automatic Time Machine backups aren’t scheduled to run at precise times, but when it’s convenient. This explains how, and what to do if goes wrong.
Why XProtect Remediator scans can report BadPluginServiceSignature status_code 31 and abort, and why you don’t need to do anything about it.
What can you do when your Time Machine backups stop running regularly? Or another background activity has gone missing?
You’ve just installed an update to macOS security software, then it gives you a status of ‘Unknown’ caused by [] and stops working. What’s wrong?
While macOS uses DAS-CTS to schedule hundreds of background activities, third-parties normally use launchd. Comes with a full diagram explaining DAS-CTS.
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.
