[Python-Dev] Re: PEP 683: "Immortal Objects, Using a Fixed Refcount"

2022年2月19日 01:47:51 -0800

On 2022年2月18日 14:56:10 -0700
Eric Snow <[email protected]> wrote:
> On Wed, Feb 16, 2022 at 11:06 AM Larry Hastings <[email protected]> wrote:
> > I experimented with this at the EuroPython sprints in Berlin years ago. I 
> > was sitting next to MvL, who had an interesting observation about it. 
> 
> Classic MvL! :)
> 
> > He suggested(*) all the constants unmarshalled as part of loading a module 
> > should be "immortal", and if we could rejigger how we allocated them to 
> > store them in their own memory pages, that would dovetail nicely with COW 
> > semantics, cutting down on the memory use of preforked server processes. 
> 
> Cool idea. I may mention it in the PEP as a possibility. Thanks!
That is not so cool if for some reason an application routinely loads
and unloads modules.
Regards
Antoine.
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