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[Python-Dev] Mercurial sluggishness (was: this is what happens if you freeze all the modules required for startup)

Daniel Holth dholth at gmail.com
Tue Apr 15 19:09:16 CEST 2014 
In case you were wondering, I'm using Ubuntu's "2.7.5+" and "3.3.2+".

My feeling has long been that the speed of getting at the "--help"
option or any initial user feedback from Mercurial or git is a big
driver in perceived speed as opposed to how long the entire operation
might take. But for me any initial speed improvements from git are
fully offset by the feeling of irritation afterwards. /troll

For me Python's startup time (warm) takes about 1/4 of the hg startup
time in the worst case. I expect to both notice and appreciate any
speedups and encourage all optimizers to optimize.

On Tue, Apr 15, 2014 at 12:47 PM, Antoine Pitrou <solipsis at pitrou.net> wrote:
> Le 15/04/2014 17:42, Daniel Holth a écrit :
>
>> I find Python's startup time to be very sluggish. I wish it was less
>> than 50 milliseconds (0.05 seconds) including running hg, which is the
>> common threshold for "instant". On my machine 'python -c ""' takes
>> about 0.05 seconds but 'python3 -c ""' takes 0.125 seconds.
>
>
> Please quote exact versions. Different versions of Python 3 will have
> different startup characteristics.
>
> Regards
>
> Antoine.
>
>
>
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