From: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Date: Tue, 5 May 2026 09:05:48 +0000 (+0300)
Subject: gh-148726: Add gc changes to What's New (#149398)
X-Git-Tag: v3.15.0b1~43
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=586c97a67b1769e12980d9dd66de58167f7ec38d;p=thirdparty%2FPython%2Fcpython.git

gh-148726: Add gc changes to What's New (#149398)
---

diff --git a/Doc/whatsnew/3.15.rst b/Doc/whatsnew/3.15.rst
index 828bc1d1d64d..c34a1bf3c471 100644
--- a/Doc/whatsnew/3.15.rst
+++ b/Doc/whatsnew/3.15.rst
@@ -1005,15 +1005,6 @@ difflib
   (Contributed by Jiahao Li in :gh:`134580`.)
 
 
-faulthandler
-------------
-
-* Added the *max_threads* parameter in :func:`faulthandler.enable`,
-  :func:`faulthandler.dump_traceback`, :func:`faulthandler.dump_traceback_later`,
-  and :func:`faulthandler.register`.
-  (Contributed by Eric Froemling in :gh:`149085`.)
-
-
 email
 -----
 
@@ -1024,6 +1015,15 @@ email
   (Contributed by R David Murray and Mike Edmunds in :gh:`122540`.)
 
 
+faulthandler
+------------
+
+* Added the *max_threads* parameter in :func:`faulthandler.enable`,
+  :func:`faulthandler.dump_traceback`, :func:`faulthandler.dump_traceback_later`,
+  and :func:`faulthandler.register`.
+  (Contributed by Eric Froemling in :gh:`149085`.)
+
+
 functools
 ---------
 
@@ -1036,6 +1036,17 @@ functools
   (Contributed by Bartosz Sławecki in :gh:`143535`.)
 
 
+gc
+--
+
+* Python 3.14.0-3.14.4 shipped with a new incremental garbage collector.
+  However, due to a number of `reports
+  <https://github.com/python/cpython/issues/142516>`__
+  of significant memory pressure in production environments,
+  it has been reverted back to the generational GC from 3.13.
+  This is the GC now used in Python 3.14.5 and later and Python 3.15.
+
+
 hashlib
 -------