Issue #4688: Add a heuristic so that tuples and dicts containing only
untrackable objects are not tracked by the garbage collector. This can
reduce the size of collections and therefore the garbage collection overhead
on long-running programs, depending on their particular use of datatypes.
(trivia: this makes the "binary_trees" benchmark from the Computer Language
Shootout 40% faster)
diff --git a/Misc/NEWS b/Misc/NEWS
index e96ec17..d734536 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,11 @@
Core and Builtins
-----------------
+- Issue #4688: Add a heuristic so that tuples and dicts containing only
+ untrackable objects are not tracked by the garbage collector. This can
+ reduce the size of collections and therefore the garbage collection overhead
+ on long-running programs, depending on their particular use of datatypes.
+
- Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to
improve its performance. Long divisions and remainder operations
are now between 50% and 150% faster.