[pypy-dev] Re: Project suggestions

[Aurélien Campéas]

Christian Tismer a écrit :
> Aurélien Campéas wrote:
> 
> ...
> 
>> Builtin ops like bignums arithmetic or whatever is implemented in C is 
>> obviously fast. OTOH, I wonder if some implementation choices of 
>> current CPyton, and part of its slowness, were made balancing 
>> simplicity of the code versus speed (stackless could be an example of 
>> a faster implementation, couldn't it ?). I remember having read stuff 
>> about that in some distant past.
> 
> 
> At that time this was true, Stackless had been 5% slower than
> normal Python. Somewhere at 1.5.2 :-)
> But at the same time, I had implemented an aceleration of the
> interpreter loop of 10-15 %, which worked especially well with
> the windows compiler. Python was not interested in my path, only
> recently they are selling their grandma for a little speed.
> 
> So I took the chance to speed up my slightly slower Stackless,
> to get a little advantage for those who didn't realize the
> real benefits of Stackless.
> 
> Summary: No, it isn't faster, maybe even slightly slower.
> But it can be much faster if you use its features to implement
> your algorithms in a way Python cannot do it. Which still gets
> more relative because they pushed generators to the extremes
> (still limited but good).
> 
> ciao - chris
> 


Isn't stackless currently used by the eve-online game, server-side, for 
its ability to do blazingly fast massive coroutining (or something like 
that, it would be interesting to know the details, by the way) ?