Serhiy Storchaka added the comment:
Here are results of microbenchmarks (time in microseconds).
copy deepcopy
unpatched patched unpatched patched
() 0.993 1.02 5.25 5.38
[] 1.53 1.12 4.81 5.08
set() 1.47 1.21 24.6 18.3
frozenset() 0.991 1 23.4 16.7
{} 1.59 1.19 5.24 5.45
bytearray() 8.76 1.11 17.5 11.2
slice(1,10,2) 7.94 1 23 18.7
NotImplemented 4.75 1 5.82 2.09
tuple(range(10)) 0.975 1.01 26.1 26.6
list(range(10)) 1.92 1.33 25.7 25.8
set(range(10)) 2.17 1.94 47.6 40.6
frozenset(range(10)) 0.973 1 47.3 40.3
dict.fromkeys(range(10)) 2.19 1.87 43.1 44.8
bytearray(range(10)) 10.5 1.17 21.8 17.4
tuple(range(1000)) 0.967 1.01 1.97e+03 2.07e+03
list(range(1000)) 5.74 5.53 2.02e+03 1.98e+03
set(range(1000)) 20.5 20.9 2.15e+03 2.06e+03
frozenset(range(1000)) 0.973 0.995 2.14e+03 2.06e+03
dict.fromkeys(range(1000)) 49.6 49.3 3.8e+03 3.92e+03
bytearray(range(10))*100 11.5 1.47 23.5 18.9
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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue26167>
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