[Python-Dev] Speeding up CPython 5-10%

[Mark Lawrence]

On 01/02/2016 16:54, Yury Selivanov wrote:
>
>
> On 2016-01-29 11:28 PM, Steven D'Aprano wrote:
>> On Wed, Jan 27, 2016 at 01:25:27PM -0500, Yury Selivanov wrote:
>>> Hi,
>>>
>>> tl;dr The summary is that I have a patch that improves CPython
>>> performance up to 5-10% on macro benchmarks.  Benchmarks results on
>>> Macbook Pro/Mac OS X, desktop CPU/Linux, server CPU/Linux are available
>>> at [1].  There are no slowdowns that I could reproduce consistently.
>> Have you looked at Cesare Di Mauro's wpython? As far as I know, it's now
>> unmaintained, and the project repo on Google Code appears to be dead (I
>> get a 404), but I understand that it was significantly faster than
>> CPython back in the 2.6 days.
>>
>> https://wpython.googlecode.com/files/Beyond%20Bytecode%20-%20A%20Wordcode-based%20Python.pdf
>>
>
> Thanks for bringing this up!
>
> IIRC wpython was about using "fat" bytecodes, i.e. using 64bits per
> bytecode instead of 8.  That allows to minimize the number of bytecodes,
> thus having some performance increase.  TBH, I don't think it was
> "significantly faster".
>

 From https://code.google.com/archive/p/wpython/

<quote>
WPython is a re-implementation of (some parts of) Python, which drops 
support for bytecode in favour of a wordcode-based model (where a is 
word is 16 bits wide).

It also implements an hybrid stack-register virtual machine, and adds a 
lot of other optimizations.
</quote>

-- 
My fellow Pythonistas, ask not what our language can do for you, ask
what you can do for our language.

Mark Lawrence