Профайлинг
Если хочешь видеть точно узкие места в производительности - профайли!
http://django-extensions.readthedocs.io/en/latest/runprofileserver.html
$ mkdir /tmp/my-profile-data $ ./manage.py runprofileserver --kcachegrind --prof-path=/tmp/my-profile-data Validating models... 0 errors found Django version X.Y.Z, using settings 'complete_project.settings' Development server is running at http://127.0.0.1:8000/ Quit the server with CONTROL-C. [13/Nov/2008 06:29:38] "GET / HTTP/1.1" 200 41107 [13/Nov/2008 06:29:39] "GET /site_media/base.css?743 HTTP/1.1" 200 17227 [13/Nov/2008 06:29:39] "GET /site_media/logo.png HTTP/1.1" 200 3474 [13/Nov/2008 06:29:39] "GET /site_media/jquery.js HTTP/1.1" 200 31033 [13/Nov/2008 06:29:39] "GET /site_media/heading.png HTTP/1.1" 200 247 [13/Nov/2008 06:29:39] "GET /site_media/base.js HTTP/1.1" 200 751 <ctrl-c> $ kcachegrind /tmp/my-profile-data/root.12574391.592.prof
А затем строй схемы KCacheGrind