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Energy Efficiency Guide for Mac Apps: Prioritize Work at the Task Level

Apps and processes compete to use finite resources—CPU, memory, network interfaces, and so on. In order to remain responsive and efficient, the system needs to prioritize tasks and make intelligent decisions about when to execute them. Work that directly impacts the user, such as UI updates in the active app, is extremely important and takes precedence over other work that may be occurring in the background. This higher priority work often uses more energy, as it may require substantial and imme...

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