[pypy-issue] [issue791] Simple wordcount is significantly slower and fatter than CPython

[jayqhacker]

New submission from jayqhacker <jayqhacker at gmail.com>:

import sys
from collections import Counter

for key, value in Counter(sys.stdin).iteritems():
    print key[:-1], value


On 64-bit Linux with 10M random lines (~600 MB):
CPython 2.7.1 : 41s,  1400 MB RSS
PyPy 1.5      : 117s, 2200 MB RSS

Input generated with:
tr -cd '[:alnum:]\n' < /dev/urandom | head -10000000 > 10M.txt

----------
messages: 2788
nosy: jayqhacker, pypy-issue
priority: bug
release: 1.5
status: unread
title: Simple wordcount is significantly slower and fatter than CPython

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PyPy bug tracker <tracker at bugs.pypy.org>
<https://bugs.pypy.org/issue791>
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