Hi Russ,
Thanks for coming back to me so quickly.
On Thursday, December 10, 2015 at 12:30:03 AM UTC, Russell Keith-Magee
wrote:
>
> HI Alex,
>
> On Wed, Dec 9, 2015 at 9:57 PM, Alexandru Damian <dda...@gmail.com
> <javascript:>> wrote:
>
>> Hi,
>>
>> I've compiled the django.template.{base,context,context_processor}
>> modules with cython in order to speed up template rendering.
>>
>> I've come to the conclusion that this is needed after profiling long page
>> loads that had the data from the database returned in 10-50 ms,
>> but the page would take seconds to complete - especially *admin change
>> views* with lots of inlines.
>>
>
> If you’re seeing admin pages taking *seconds* to render, and the database
> is truly taking 10-50ms, there’s something going *very* wrong here. Can you
> share your profile data?
>
I cProfile-instrumented *def get_response() *in *django/core/handlers/base.py
*without (vanilla django) and with cemplate, posted the results here:
https://github.com/ddalex/django-cemplate/tree/master/profile_data
Both profiles are with all caches primed. Please compare time spent in
django/template/base.py in vanilla (0.773 seconds) and cemplate (0.288)
seconds.
>
>
>> I am seeing a 13% decrease in page rendering time across the board,
>> obviously passing all django tests.
>>
>
> Have you tried running PyPy instead? The reports I’ve seen suggest you’ll
> get a *lot* more than a 13% speedup.
>
Looked at pypy first; unfortunately, not all the modules we are using are
pypy-compatible.
>
> To make this easy to deploy I've compiled it as a drop-in replacement
>> (targeting django 1.8.7) that uses import hooks (PEP 302)
>> to replace targeted modules on the fly.
>>
>> The sources/releases are here: https://github.com/ddalex/django-cemplate
>>
>> Can you please advise on how to continue this work ?
>> I feel that maintaining separate trees for each Django release is not
>> scalable on my part.
>>
>
> It’s difficult to say without knowing what you’re proposing. Is there some
> change you’d like to see merged into Django? Some API hook that you’d like
> to add to make your life easier?
>
>
I am thinking of cythonizing parts of django (e.g. the modules that I am
modifying here) - this will bring .c compilation on install, but will make
code faster in the framework, where it is likely that nobody is modifying
it. It brings in an extra dependency on cython for developers. What is your
take on this ?
Yours,
> Russ Magee %-)
>
Cheers,
Alex
--
You received this message because you are subscribed to the Google Groups
"Django developers (Contributions to Django itself)" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to django-developers+unsubscr...@googlegroups.com.
To post to this group, send email to django-developers@googlegroups.com.
Visit this group at http://groups.google.com/group/django-developers.
To view this discussion on the web visit
https://groups.google.com/d/msgid/django-developers/ad46f2d6-3c20-4c3d-b26f-66b8fd19f967%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
