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CTS

How to run commands and scripts on Efficiency cores

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Although there doesn’t appear to be any straightforward way to run command tools or scripts only on Efficiency cores, there are ways and means.

September 14, 2021 Macs, Technology

Explainer: macOS scheduled background activities

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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.

September 10, 2021 Macs, Technology

Time Machine to APFS: Initiating an auto backup

How the start of Time Machine backups to APFS volumes is scheduled and dispatched, and a fascinating Secure Backup Daemon.

March 9, 2021 Macs, Technology

Time Machine to APFS: Evolution

How Time Machine has changed since it appeared in 2007, and how backing up to APFS volumes is different now it’s available in Big Sur.

March 4, 2021 Macs, Technology

Background activity scheduling with CTS in Catalina

CTS now schedules many important services, including syncing Calendar, Contacts, Messages, running weekly firmware checks with eficheck, and more.

October 19, 2020 Macs, Technology

What happens when background scheduling fails

CTS scheduling and dispatch of background tasks has no user interface, and no controls. How can you tell that there’s a problem, and what to do about it?

October 17, 2020 Macs, Technology

How macOS schedules and dispatches background tasks using CTS 3

What does it take for an app to have ‘activities’ managed for efficiency by CTS? Not a lot – but in return, the management is a black box.

October 15, 2020 Macs, Technology

How macOS schedules and dispatches background tasks using CTS 2

In the first article in this series, I explained how a great many background activities in macOS, including […]

October 14, 2020 Macs, Technology

How macOS schedules and dispatches background tasks using CTS 1

Rather than using cron or launchd, many background services in macOS are now run using Centralized Task Scheduling (CTS). This is how it works.

October 13, 2020 Macs, Technology

Mints now provides better volume info, and looks at task scheduling

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Adds a new log view of background task scheduling and dispatch, greatly improves volume info, and fixes a rare crash.

October 12, 2020 Macs, Technology, Updates

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