Блоки Python 3.5 aiohttp даже при использовании async / wait
Я запускаю тестовый веб-сервер aiohttp:
#!/usr/bin/env python3 from aiohttp import web import time import asyncio import random import string import logging logger = logging.getLogger('webserver') logger.setLevel(logging.INFO) handler = logging.StreamHandler() formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s') handler.setFormatter(formatter) logger.addHandler(handler) def randomword(length): return ''.join(random.choice(string.ascii_lowercase) for i in range(length)) async def hello(request): sleeptime = 10 # seconds requestid = randomword(5) logger.info("Request id: {} received - will sleep for {}".format(requestid, sleeptime)) await asyncio.sleep(sleeptime) logger.info("Request id: {} wakeup and respond".format(requestid)) return web.json_response() # create app and register with request handler app = web.Application() app.router.add_get('/', hello) web.run_app(app, port='15000') Ожидается, что он сможет обрабатывать несколько входящих запросов одновременно, не дожидаясь завершения одного запроса до обработки следующего. Однако это не так – обработка последовательна (обратите внимание на время начала второго / третьего запроса после завершения предыдущих запросов):
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======== Running on http://0.0.0.0:15000/ ======== (Press CTRL+C to quit) 2016-10-23 02:28:23,911 - webserver - INFO - Request id: hpzdo received - will sleep for 10 2016-10-23 02:28:33,922 - webserver - INFO - Request id: hpzdo wakeup and respond 2016-10-23 02:28:33,947 - webserver - INFO - Request id: pdfbs received - will sleep for 10 2016-10-23 02:28:43,957 - webserver - INFO - Request id: pdfbs wakeup and respond 2016-10-23 02:28:43,971 - webserver - INFO - Request id: dmkav received - will sleep for 10 2016-10-23 02:28:53,982 - webserver - INFO - Request id: dmkav wakeup and respond
Я бы ожидал, что время начала каждого запроса будет почти одинаковым (в зависимости от того, насколько быстро я их отправляю, здесь я отправляю вручную через секунду или два).
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Что-то не так с вашей методикой тестирования.
Запуск инструмента wrk против вашего сервера дает разные результаты.
Команда запуска:
wrk http://127.0.0.1:15000/
Выход сервера:
======== Running on http://0.0.0.0:15000 ======== (Press CTRL+C to quit) 2016-10-23 14:58:56,447 - webserver - INFO - Request id: hkkrp received - will sleep for 10 2016-10-23 14:58:56,447 - webserver - INFO - Request id: cysoy received - will sleep for 10 2016-10-23 14:58:56,448 - webserver - INFO - Request id: udwxe received - will sleep for 10 2016-10-23 14:58:56,448 - webserver - INFO - Request id: moqkf received - will sleep for 10 2016-10-23 14:58:56,449 - webserver - INFO - Request id: shetp received - will sleep for 10 2016-10-23 14:58:56,450 - webserver - INFO - Request id: fhilc received - will sleep for 10 2016-10-23 14:58:56,451 - webserver - INFO - Request id: birax received - will sleep for 10 2016-10-23 14:58:56,452 - webserver - INFO - Request id: yyeoc received - will sleep for 10 2016-10-23 14:58:56,453 - webserver - INFO - Request id: mpkwf received - will sleep for 10 2016-10-23 14:58:56,454 - webserver - INFO - Request id: nkxiz received - will sleep for 10 2016-10-23 14:59:06,450 - webserver - INFO - Request id: hkkrp wakeup and respond 2016-10-23 14:59:06,451 - webserver - INFO - Request id: cysoy wakeup and respond 2016-10-23 14:59:06,451 - webserver - INFO - Request id: udwxe wakeup and respond 2016-10-23 14:59:06,452 - webserver - INFO - Request id: moqkf wakeup and respond 2016-10-23 14:59:06,452 - webserver - INFO - Request id: shetp wakeup and respond 2016-10-23 14:59:06,453 - webserver - INFO - Request id: fmpmm received - will sleep for 10 2016-10-23 14:59:06,453 - webserver - INFO - Request id: uusnt received - will sleep for 10 2016-10-23 14:59:06,453 - webserver - INFO - Request id: kjlzk received - will sleep for 10 2016-10-23 14:59:06,453 - webserver - INFO - Request id: elhje received - will sleep for 10 2016-10-23 14:59:06,453 - webserver - INFO - Request id: bkvjp received - will sleep for 10 2016-10-23 14:59:06,454 - webserver - INFO - Request id: fhilc wakeup and respond 2016-10-23 14:59:06,454 - webserver - INFO - Request id: birax wakeup and respond 2016-10-23 14:59:06,454 - webserver - INFO - Request id: yyeoc wakeup and respond 2016-10-23 14:59:06,455 - webserver - INFO - Request id: nyhba received - will sleep for 10 2016-10-23 14:59:06,455 - webserver - INFO - Request id: iqjvr received - will sleep for 10 2016-10-23 14:59:06,455 - webserver - INFO - Request id: osfsg received - will sleep for 10 2016-10-23 14:59:06,455 - webserver - INFO - Request id: mpkwf wakeup and respond 2016-10-23 14:59:06,456 - webserver - INFO - Request id: nkxiz wakeup and respond 2016-10-23 14:59:06,456 - webserver - INFO - Request id: ebzai received - will sleep for 10 2016-10-23 14:59:06,456 - webserver - INFO - Request id: erfhe received - will sleep for 10