Add an API to allow getting the number of "performance" cores-only #127017
Description
Feature or enhancement
Proposal:
Currently Python provides os.cpu_count() which returns the total number of physical CPU cores.
On macOS M-class machines (and probably other ARM hardware), there are actually two types of CPU cores: performance cores, and efficiency cores.
For many tasks where a user wants to do "1 task per core", it really only makes sense to do 1 task per performance core.
Therefore it'd be sensible to expose this number. On macOS it can be found with the hw.perflevel0.logicalcpu sysctl.
This could be done in one of two ways, a new function, e.g. os.performance_cpu_count(), or as a keyword-argument to os.cpu_count(performance_cores_only=True).
Has this already been discussed elsewhere?
This is a minor feature, which does not need previous discussion elsewhere
Links to previous discussion of this feature:
No response