[Python-Dev] importlib

[Nick Coghlan]

On Thu, Jul 15, 2010 at 4:06 PM, Brett Cannon <brett at python.org> wrote:
>> In any case, here my results under a Linux system:
>>
>> $ ./python -m importlib.test.benchmark
>> sys.modules [ 323782 326183 326667 ] best is 326667
>> Built-in module [ 33600 33693 33610 ] best is 33693
>>
>> $ ./python -m importlib.test.benchmark -b
>> sys.modules [ 1297640 1315366 1292283 ] best is 1315366
>> Built-in module [ 58180 57708 58057 ] best is 58180
>
> And this is what might make evaluating importlib tough; while the
> performance is 25% of what it is for import.c, being able to import
> over 300,000 times/second is still damn fast.

Yeah, I think the numbers where the filesystem gets involved are going
to be more relevant. Modules that have already been cached and those
built in to the executable aren't likely to dominate interpreter and
application startup times (which is the main thing I'm worried about
seeing regress).

Cheers,
Nick.

-- 
Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia