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| -rw-r--r-- | Doc/whatsnew/2.7.rst | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/Doc/whatsnew/2.7.rst b/Doc/whatsnew/2.7.rst index e44a42b353..e035eb0b69 100644 --- a/Doc/whatsnew/2.7.rst +++ b/Doc/whatsnew/2.7.rst @@ -129,6 +129,14 @@ A few performance enhancements have been added: (Suggested by Martin von Loewis and implemented by Antoine Pitrou; :issue:`4074`.) +* The garbage collector tries to avoid tracking simple containers which + can't be part of a cycle. As of now, this is true for tuples and dicts + containing atomic types (such as ints, strings, etc.). Transitively, a dict + containing tuples of atomic types won't be tracked either. This helps brings + down the cost of full garbage collections, since it decreases the number of + objects to be considered and traversed by the collector. + (Contributed by Antoine Pitrou; :issue:`4688`.) + .. ====================================================================== |