On Sun, Mar 8, 2009 at 7:30 AM, Christian Heimes <li...@cheimes.de> wrote:
> Antoine Pitrou wrote:
>> Hi,
>>
>> Victor Stinner <victor.stinner <at> haypocalc.com> writes:
>>> Summary (minimum total) on 32 bits CPU:
>>>  * Python 2.6.1: 8762 ms
>>>  * Python 3.0.1: 8977 ms
>>>  * Python 3.1a1: 9228 ms (slower than 3.0)
>>
>> Have you compiled with or without "--with-computed-gotos"?
>
> Why is the feature still disabled by default?
>
> Christian
>
> PS: Holy moly! Computed gotos totally put my Python on fire! The feature
> increases the minimum run-time by approx. 25% and the average run-time
> by approx. 40% on my Ubuntu 8.10 box (AMD64, Intel(R) Core(TM)2 CPU
> T7600  @ 2.33GHz).

Note that of the benchmarks tested, PyBench benefits the most from
threaded eval loop designs. Other systems benefit less; for example,
Django template benchmarks were only sped up by 7-8% when I was
testing it.

Collin Winter
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