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Groups > comp.lang.python > #55775
| From | Roy Smith <roy@panix.com> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: Idea for removing the GIL... |
| Date | 2011-02-08 11:52 -0500 |
| Organization | PANIX Public Access Internet and UNIX, NYC |
| Message-ID | <roy-65096A.11523608022011@news.panix.com> (permalink) |
| References | <7d3a67ba-b5ff-4b11-95b5-71f041dfc63a@o7g2000prn.googlegroups.com> <mailman.0.1297159531.1633.python-list@python.org> <b88fdfc0-0aa1-4710-9b82-30afff9f8a01@a28g2000prb.googlegroups.com> <AANLkTi=i1Zm-MC2isn+hpn6WGy0MSsV7=5LzKnQ8_xVC@mail.gmail.com> <mailman.13.1297183120.1633.python-list@python.org> |
In article <mailman.13.1297183120.1633.python-list@python.org>, Robert Kern <robert.kern@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 process creation.
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Re: Idea for removing the GIL... Adam Tauno Williams <awilliam@whitemice.org> - 2011-02-08 05:05 -0500
Re: Idea for removing the GIL... Vishal <vsapre80@gmail.com> - 2011-02-08 04:34 -0800
Re: Idea for removing the GIL... Stefan Behnel <stefan_ml@behnel.de> - 2011-02-08 18:05 +0100
Re: Idea for removing the GIL... Roy Smith <roy@panix.com> - 2011-02-08 11:52 -0500
Re: Idea for removing the GIL... Jean-Paul Calderone <calderone.jeanpaul@gmail.com> - 2011-02-08 04:53 -0800
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