Geordi: Interactive Django profiling
Geordi is a Django middleware that lets you interactively profile your site. Add ?__geordi__ to any URL, browse to it, and you'll get a PDF showing the request's call graph and the time spent in each call.
If you've set DEBUG = True in your Django settings, anyone can profile a page–even anonymous users. With DEBUG = False, only super users can profile pages.
Before you get started, make sure you have GraphViz installed.
After you've done pip install geordi, add 'geordi' to the INSTALLED_APPS setting, and add 'geordi.VisorMiddleware' to the MIDDLEWARE_CLASSES setting. You'll probably want to put it after Django's authentication middleware and before everything else.