Benchmarks

benchmarks/bench.py times a batch of concurrent requests through AsyncHTTPClient against a loopback server that answers each request after a fixed delay: with ThreadedTransport, the default, which waits for each reply on a worker thread, and with AsyncHttpxTransport, which waits on the event loop. It also times HTTPClient with HttpxTransport and the built-in transport on the same sequential requests.

python benchmarks/bench.py            # run the benchmarks
python benchmarks/bench.py --help     # options; runs nothing
python benchmarks/bench.py --save     # also write benchmarks/results/<name>.json

Compare two runs on their medians, and only between runs from the same machine and interpreter. The result schema is described in benchmarks/README.md. A run on a developer machine is a sanity check; performance claims come from CI runs.