[Python-Dev] Feature Request: Py_NewInterpreter to create separate GIL (branch)

[Josiah Carlson]

Talin <talin at acm.org> wrote:
> 
> Guido van Rossum wrote:
> > I don't know how you define simple. In order to be able to have
> > separate GILs  you have to remove *all* sharing of objects between
> > interpreters. And all other data structures, too. It would probably
> > kill performance too, because currently obmalloc relies on the GIL.
> 
> Nitpick: You have to remove all sharing of *mutable* objects. One day, 
> when we get "pure" GC with no refcounting, that will be a meaningful 
> distinction. :)

Python already grew that feature a couple years back, but it never
became mainline. Search google (I don't know the magic incantation off
the top of my head), buf if I remember correctly, it wasn't a
significant win if any at all.


 - Josiah