On: Progress on No-GIL CPython

[AlphaSite]

It’s been a while but isn’t GCD an OS global queue rather than local to the process?

[mpercival531 → AlphaSite]

Each process has its own GCD queue hierarchy that are executed by an in-process thread pool. Though it has some bits coupled with the kernel for stuff like Queue/Task QoS class -> Darwin thread QoS class and relatedly priority inversion.