For a simple benchmark test you can run py -m tests.benchmark.
Using 10 thread workers, and sending 100 requests.
Example benchmark output:
-------[custom Curl Adapter]-------
[*] Average request speed custom Curl Adapter : 0.3508183431625366
[*] Average requests/sec custom Curl Adapter : 27.448449703641707
-------[default urllib3 Adapter]-------
[*] Average request speed default urllib3 Adapter : 0.45488128185272214
[*] Average requests/sec default urllib3 Adapter : 20.894119822529422
It shows the average request elapsed time in ms, and average amount of requests per sec. Results can vary.