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 a simple example on @dcramer's slideshare and modified it to support sorting.
$ pip install django-cprofile-middleware
Then add django_cprofile_middleware.middleware.ProfilerMiddleware
to the end your MIDDLEWARE
in settings.py. This option was called MIDDLEWARE_CLASSES
in versions of Django before 1.10.
For example:
MIDDLEWARE_CLASSES = (
'django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'startup.do.work.FindProductMarketFitMiddleware',
...
'django_cprofile_middleware.middleware.ProfilerMiddleware'
)
The profiler will only be available when the Django setting DEBUG
is set to True
. By default it's also required to be an authenticated user with is_staff
set to True
which is making the request to be profiled. The is_staff
check can be configured as follows:
DJANGO_CPROFILE_MIDDLEWARE_REQUIRE_STAFF = False
Once you've installed it, log in as a user who has staff privileges and 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.
download: Download profile file, that can be visualized in multiple viewers, e.g. SnakeViz or RunSnakeRun
Email me with any questions: [email protected].