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To: python-list@python.org
From: Terry Reedy <tjreedy@udel.edu>
Subject: Re: New internal string format in 3.3
Date: Sun, 19 Aug 2012 13:48:35 -0400
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On 8/19/2012 10:09 AM, wxjmfauth@gmail.com wrote:

> I can not give you more numbers than those I gave.
> As a end user, I noticed and experimented my random tests
> are always slower in Py3.3 than in Py3.2 on my Windows platform.

And I gave other examples where 3.3 is *faster* on my Windows, which you 
have thus far not even acknowledged, let alone try.

> It is up to you, the core developers to give an explanation
> about this behaviour.

System variation, unimportance of sub-microsecond variations, and 
attention to more important issues.

Other developer say 3.3 is generally faster on their sy
stems (OSX 10.8, and unspecified). To talk about speed sensibly, one 
must run the full stringbench.py benchmark and real applications on 
multiple Windows, *nix, and Mac systems. Python is not optimized for 
your particular current computer.

-- 
Terry Jan Reedy