[Python-Dev] importlib

[anatoly techtonik]

On Thu, Jul 15, 2010 at 2:55 PM, Nick Coghlan <ncoghlan at gmail.com> 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).

What about web-applications? Is that true that for FastCgi or mod_wsgi
deamon mode interpreter and application is started only once per say
100 requests?
--
anatoly t.