On Sep 21, 2013, at 12:04 AM, Alex Gaynor <[email protected]> wrote:

> Hi all,
> 
> I didn't follow this PR as it was in progress, but I just sat down and read 
> them. I have to say I'm extremely saddened by 
> https://docs.djangoproject.com/en/dev/topics/performance/#alternative-software-implementations
>  . This seems like extremely bad advice to me.
> 
> In my work I've had the opportunity to do performance work across a huge 
> number of applications, and there is an amazing corrolation between people 
> who insist their application is strictly IO bound, and applications which I 
> find 30% wins in just by switching to PyPy.
> 
> PyPy is known to provide substantial performance gains on Django's template 
> engine 
> (http://speed.pypy.org/comparison/?exe=1%2BL%2Bdefault%2C2%2B472&ben=3&env=1&hor=true&bas=none&chart=normal+bars),
>  at the time of writing it's something like 10x.
> 
> Further, the claim that "Any gains are likely to be small, and compatibility 
> issues are common." is pure FUD, and unsubstantiated.
> 
> I'd strongly prefer we remove this from our docs, and if anything we should 
> be encouraging the opposite, people with performance issues should be 
> encouraged to consider things like PyPy, not hide from them.
> 
> Alex
> 
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I agree.

-----------------
Donald Stufft
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