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Publicize the GC untracking optimization

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Antoine Pitrou 2009-03-28 19:10:13 +00:00
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@ -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`.)
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