[pypy-issue] [issue1330] fib(47) vs fib(48)

Eric tracker at bugs.pypy.org
Thu Nov 22 14:52:32 CET 2012


Eric <eric.saintetienne at gmail.com> added the comment:

Also it's not a JIT issue as psyco is consistent (as expected fib(47) is faster 
than fib(48) when using psyco)

Time measurements:

-- fib(48) --

psyco: fib(48)=4807526976
real    3m28.131s
user    3m27.945s
sys     0m0.008s

pypy: fib(48)=4807526976
real    5m19.042s
user    5m18.468s
sys     0m0.296s

-- fib(47) --

psyco: fib(47)=2971215073
real    2m12.313s
user    2m12.188s
sys     0m0.004s

pypy: fib(47)=2971215073
real    12m9.047s
user    12m7.657s
sys     0m0.776s

----------
status: unread -> chatting

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PyPy bug tracker <tracker at bugs.pypy.org>
<https://bugs.pypy.org/issue1330>
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