New issue 3175: Using pickle slows down PyPy3.6 v7.3.1
https://bitbucket.org/pypy/pypy/issues/3175/using-pickle-slows-down-pypy36-v731
Daniel Ariad:
Running the code below with cpython 3.7.6 gave:
3\.5014491081237793 1.3246009349822998 0.7191169261932373,
while running the code below with cpython 3.7.6 gave:
8\.686806917190552 3.4107110500335693 0.04938697814941406
import time, pickle
a = time.time\(\)
A = \{i:i\*\*2 for i in range\(10000000\)\}
with open\('BUG.p' , "wb" \) as f:
pickle.dump\( A, f \)
b = time.time\(\)
with open\('BUG.p', 'rb'\) as f:
A = pickle.load\(f\)
c = time.time\(\)
result = \[a\+b for a,b in A.items\(\)\]
d = time.time\(\)
print\(b-a,c-b,d-c\)
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