https://github.com/python/cpython/commit/74ff496dce9f7db1dd1e2184d4316cc21d78ee52 commit: 74ff496dce9f7db1dd1e2184d4316cc21d78ee52 branch: main author: Adam Turner <[email protected]> committer: hugovk <[email protected]> date: 2024-08-25T16:17:46+03:00 summary:
GH-109975: Copyedit 3.13 What's New: Optimizations (#123301) files: M Doc/whatsnew/3.13.rst diff --git a/Doc/whatsnew/3.13.rst b/Doc/whatsnew/3.13.rst index 340c3ae5888221..8386d7a3229482 100644 --- a/Doc/whatsnew/3.13.rst +++ b/Doc/whatsnew/3.13.rst @@ -487,6 +487,8 @@ but the platform is not yet officially supported. .. seealso:: :pep:`730`, :pep:`738` +.. _whatsnew313-incremental-gc: + Incremental garbage collection ------------------------------ @@ -1465,24 +1467,33 @@ zipimport Optimizations ============= -* :func:`textwrap.indent` is now ~30% faster than before for large input. +* The new :ref:`incremental garbage collector <whatsnew313-incremental-gc>` + means that maximum pause times are reduced + by an order of magnitude or more for larger heaps. + (Contributed by Mark Shannon in :gh:`108362`.) + +* Several standard library modules have had + their import times significantly improved. + For example, the import time of the :mod:`typing` module + has been reduced by around a third by removing dependencies + on :mod:`re` and :mod:`contextlib`. + Other modules to enjoy import-time speedups include + :mod:`email.utils`, :mod:`enum`, :mod:`functools`, + :mod:`importlib.metadata`, and :mod:`threading`. + (Contributed by Alex Waygood, Shantanu Jain, Adam Turner, Daniel Holla, + and others in :gh:`109653`.) + +* :func:`textwrap.indent` is now around 30% faster than before for large input. (Contributed by Inada Naoki in :gh:`107369`.) -* The :mod:`subprocess` module uses :func:`os.posix_spawn` in more situations - including the default where ``close_fds=True`` on many modern platforms. This - should provide a noteworthy performance increase launching processes on - FreeBSD and Solaris. See the :ref:`subprocess <whatsnew313-subprocess>` - section above for details. +* The :mod:`subprocess` module now uses the :func:`~os.posix_spawn` function in + more situations, including when *close_fds* is ``True`` (the default) + on many modern platforms. + This should provide a notable performance increase + when launching processes on FreeBSD and Solaris. + See the :ref:`subprocess <whatsnew313-subprocess>` section above for details. (Contributed by Jakub Kulik in :gh:`113117`.) -* Several standard library modules have had their import times significantly - improved. For example, the import time of the :mod:`typing` module has been - reduced by around a third by removing dependencies on :mod:`re` and - :mod:`contextlib`. Other modules to enjoy import-time speedups include - :mod:`importlib.metadata`, :mod:`threading`, :mod:`enum`, :mod:`functools` - and :mod:`email.utils`. - (Contributed by Alex Waygood, Shantanu Jain, Adam Turner, Daniel Hollas and - others in :gh:`109653`.) Removed Modules And APIs ======================== _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3/lists/python-checkins.python.org/ Member address: [email protected]
