Idea for removing the GIL...
roy at panix.com
Tue Feb 8 17:52:36 CET 2011
In article <mailman.13.1297183120.1633.python-list at python.org>,
Robert Kern <robert.kern at gmail.com> wrote:
> Unlike a UNIX fork, CreateProcess() does not have the same copy-on-write
> semantics for initializing the memory of the new process. If you want to pass
> data to the children, the data must be pickled and sent across the process
> boundary. He's not saying that multiprocessing isn't useful at all on
> Windows, just less useful for the scenarios he is considering here.
Amen, brother! I used to work on a project that had a build system
which was very fork() intensive (lots of little perl and shell scripts
driven by make). A full system build on a linux box took 30-60 minutes.
Building the same code on windows/cygwin took about 12 hours. Identical
hardware (8-core, 16 gig Dell server, or something like that).
As far as we could tell, it was entirely due to how bad Windows was at
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