HTTP server & framework benchmarks

responder benchmark results

responder 9.2 is a python web framework. At concurrency 64 it serves 16 822 requests per second with a P50 latency of 3.80 ms, ranking 314 of 383 overall and 29 of 46 among python frameworks.

Language: python 3.14
Framework version: 9.2
Website: https://responder.kennethreitz.org
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Throughput, latency & reliability

All measured metrics for responder 9.2, by concurrency level.
Metric	Concurrency 64	Concurrency 256	Concurrency 512
Requests / second	16 822	16 604	16 271
P50 latency	3.80 ms	15.39 ms	31.32 ms
P75 latency	3.99 ms	15.51 ms	31.58 ms
P90 latency	4.06 ms	15.65 ms	31.82 ms
P99 latency	4.23 ms	16.42 ms	33.19 ms
P99.999 latency	11.97 ms	258.05 ms	1608.53 ms
Average latency	3.81 ms	15.41 ms	31.43 ms
Minimum latency	0.80 ms	0.75 ms	0.55 ms
Standard deviation	0.28 ms	4.06 ms	33.87 ms
Total requests	252 332	249 079	244 120
Bytes received	32.08 MB	31.67 MB	31.04 MB
HTTP errors	0	0	0
Request timeouts	0	0	0
Socket connection errors	0	0	0
Socket read errors	0	0	0
Socket write errors	0	0	0

Position in this benchmark

Position of responder on requests per second.
Concurrency	Overall	Among python frameworks
64	314 of 383	29 of 46
256	313 of 383	29 of 46
512	312 of 383	29 of 46

Badge for your README

Show the rank of responder in your README. The image is updated together with the results.

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Explore python frameworks

Fastest python frameworks at concurrency 64.
#	Framework	Requests / second	P50 latency	P99 latency
1	peregrine-wsgi 1.1	191 025	0.30 ms	0.85 ms
2	weft-wsgi 0.1	153 346	0.41 ms	0.52 ms
3	fastpysgi-wsgi 0.6	147 137	0.46 ms	0.58 ms
4	peregrine-asgi 1.1	118 540	0.55 ms	0.68 ms
5	weft-asgi 0.1	118 218	0.53 ms	0.79 ms
6	oxapy 0.11	85 921	0.73 ms	1.34 ms
7	peregrine-blacksheep 2.6	74 401	0.95 ms	1.14 ms
8	emmett 2.7	47 667	1.27 ms	2.98 ms
9	asgineer 0.9	43 752	1.46 ms	2.09 ms
10	mq-bridge-py 0.2	41 435	1.63 ms	1.86 ms

All 46 python frameworks