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Sun May 29 21:53:59 EDT 2016 · https://mail.python.org/pipermail/python-dev/2016-May/144792.html

On Thu, May 26, 2016 at 10:19:05AM +0000, Artyom Skrobov wrote:
[...]
> The motivation for this patch was to enable a memory footprint 
> optimization, discussed at http://bugs.python.org/issue26415 My 
> proposed optimization reduces the memory footprint by up to 30% on the 
> standard benchmarks, and by 200% on a degenerate case which sparked 
> the discussion. The run time stays unaffected by this optimization.

That can't be right. How can you reduce memory usage by more than one 
hundred percent? That would mean you have saved more memory than was 
originally used and are now using a negative amount of memory.

-- 
Steve

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[Python-Dev] Python parser performance optimizations