tree 28d9ca7a2f538e80fc9d6b00a22cea40b9941a33
parent e5b78563b6f394e69d87ee68cc82c173c95dfa0b
author Antoine Pitrou <solipsis@pitrou.net> 1237833705 +0000
committer Antoine Pitrou <solipsis@pitrou.net> 1237833705 +0000
HG:extra convert_revision:svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/python/branches/legacy-trunk%4070546

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)