[Python-Dev] Help requested with Python 2.7 performance regression

[Louis Bouchard]

Hello,

Le 01/03/2017 à 20:40, Antoine Pitrou a écrit :
> On Wed, 1 Mar 2017 20:24:03 +0100
> Louis Bouchard <louis.bouchard at canonical.com> wrote:
>>
>> Indeed, this is something that is in the history of the LP bug so here is the
>> URL where those comparison can be found :
>>
>> https://docs.google.com/spreadsheets/d/1MyNBPVZlBeic1OLqVKe_bcPk2deO_pQs9trIfOFefM0/edit#gid=2034603487
> 
> Some more questions:
> * what does "faster" or "slower" mean (that is, which one is faster)?
> * is it possible to have actual performance differences in percent?
>   being 2% slower is not the same as being 30% slower...
> 

This means that the second element of the test is slower than the first. For
instance if the test is Trusty stock .vs. Xenial stock and it shows slower, it
means that Xenial stock is slower than Trusty stock.

This is directly taken from the output of "pyperformance compare". The third
column of each comparison (1.x) gives the proportion figure of the test.

A test that shows slower 1.14 is 14% slower.

HTH,

Kind regards,

...Louis


-- 
Louis Bouchard
Software engineer, Cloud & Sustaining eng.
Canonical Ltd
Ubuntu developer                       Debian Maintainer
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