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[Python-Dev] Python startup time

Antoine Pitrou solipsis at pitrou.net
Fri Jul 21 04:54:32 EDT 2017 
On Fri, 21 Jul 2017 00:12:20 -0700
David Mertz <mertz at gnosis.cx> wrote:
> How implausible is it to write out the actual memory image of a loaded
> Python process? I.e. on a specific machine, OS, Python version, etc? This
> can only be overhead initially, of course, but on subsequent runs it's just
> one memory map, which the cheapest possible operation.

You can't rely on the file being remapped at the same address when you
reload it.  So you'd have to write a relocation routine that's able to
find and fix *all* pointers inside the Python object tree and CPython's
internal structures (fixing the pointers is not necessarily difficult,
finding them without missing any is the difficult part).

Regards

Antoine.
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