Article 6FT3X How does macOS manage virtual cores on Applesilicon?

How does macOS manage virtual cores on Applesilicon?

by
Thom Holwerda
from OSnews on (#6FT3X)

One of the most distinctive features of Apple silicon chips is that they have two types of CPU core, E (Efficiency) cores that are energy efficient but slower than the P (Performance) cores, which normally run much of the code in the apps we use. Apps don't decide directly which cores they will be run on, that's a privilege of macOS, but they register their interest by setting a Quality of Service, or QoS, which is then taken into account when they're scheduled to run. With the introduction of Game Mode in Sonoma, CPU scheduling can now work differently, with E cores being reserved for the use of games. This article looks at another atypical situation, when running a macOS virtual machine (VM) assigned a set number of virtual cores. How does macOS Sonoma handle that?

Exactly what is says on the tin.

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