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Elaborate about the GIL.

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Antoine Pitrou 2011-01-06 16:31:28 +00:00
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Doc/library/threading.rst
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@ -17,11 +17,23 @@ The :mod:`dummy_threading` module is provided for situations where
methods and functions in this module in the Python 2.x series are still
supported by this module.
.. impl-detail::
Due to the :term:`Global Interpreter Lock`, in CPython only one thread
can execute Python code at once (even though certain performance-oriented
libraries might overcome this limitation).
If you want your application to make better of use of the computational
resources of multi-core machines, you are advised to use
:mod:`multiprocessing` or :class:`concurrent.futures.ProcessPoolExecutor`.
However, threading is still an appropriate model if you want to run
multiple I/O-bound tasks simultaneously.
.. seealso::
Latest version of the :source:`threading module Python source code
<Lib/threading.py>`
This module defines the following functions and objects: