skyl / django-cprofile-middleware

Helpful django cprofiling middleware.

django-cprofile-middleware

This is a simple profiling middleware for Django applications. I wrote it because I got tired of printing "start" "stop" "stop 2" in my programs to find the bottlenecks.

I found simple example on @dcramer's slideshare and modified it to support sorting.

Installing

Move profile.py to an application's middleware directory. If you're creating the middleware directory for the first time, be sure to add an __init__.py file to it. We've all forgotten to do that many times before ;).

Then, add profile.ProfilerMiddleware to the end your MIDDLEWARE_CLASSES.

For example:

MIDDLEWARE_CLASSES = (
    'django.middleware.common.CommonMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'startup.do.work.FindProductMarketFitMiddleware',
    ...
    'app.middleware.profile.ProfilerMiddleware'
)

Again, add the profiler middleware to the end of MIDDLEWARE_CLASSES so that it can include middleware operations in the profile.

Running & Sorting Results

Once you've installed it, add ?prof to any URL to see the profiler's stats. For example to see profile stats for http://localhost:8000/foo/, visit http://localhost:8000/foo/?prof.

You can also pass some options:

count: The number of results you'd like to see. Default is 100.

sort: The field you'd like to sort results by. Default is time. For all the options you can pass, see the docs for pstats.

Enjoy!

Email me with any questions: [e-mail].