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Issue 1771: 3x slower than CPython on alphabet soup challenge script
https://bitbucket.org/pypy/pypy/issue/1771/3x-slower-than-cpython-on-alphabet-soup
Armin Rigo:
This is 3.3x slower on PyPy than on CPython:
import time
prebuilt = set([str(n) for n in range(10**7)])
t1 = time.time()
for i in range(5):
foo = set(['Foo'])
foo |= prebuilt
print time.time() - t1
This is 6.4x slower:
import time
prebuilt = {}
for i in range(10**7):
prebuilt[str(i)] = -12.34
t1 = time.time()
for i in range(5):
foo = {'Foo': 213.1}
foo.update(prebuilt)
print time.time() - t1
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