This is a follow up of a feature request which recently appeared on psutil bug tracker:

I don't know whether the proposal makes sense for psutil per-se but it certainly made me think about multiprocessing.cpu_count() and the fact that it currently returns the number of virtual CPUs (physical + logical).

Given that multiple processes cannot take any advantage of hyper threading technology then maybe it makes sense for multiprocessing to expose a physical_cpu_count() function in order to preemptively figure out how many processes to spawn.

Same thing is discussed here:

Thoughts?

--- Giampaolo