This repository is a sample Django project to help test some issues with channels/uvicorn/gunicorn. It has a single view configured at /delay/<ms>/ which will time.sleep for ms and return 200.
load_test.py takes two arguments, concurrency and requests. It will hit the /delay/ endpoint with a sequence of request with random delays between 0 and 1 second. The random generator is seeded with 0 before each run, so subsequent runs test the same thing. It prints some statistics on the request results.
Install dependencies
Install the required dependencies with:
python3 -mvenv env
env/bin/pip install --upgrade pip setuptools
env/bin/pip install "django<3" channels uvicorn gunicorn requests
Test scenarios
1. Channels returns 500s when workers > 1
Start the server:
make asgi
Hit the server with 10 requests and concurrency 10:
env/bin/python load_test.py 10 10
Observe a bunch of errors in your web server log output.
Now run ten requests with concurrency 1:
env/bin/python load.test 1 10
And see that all is well.