aiohttp 并发请求被挂起 - V2EX
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Multicom
V2EX    Python

aiohttp 并发请求被挂起

  •  
  •   Multicom 2021-06-18 21:09:39 +08:00 2042 次点击
    这是一个创建于 1580 天前的主题,其中的信息可能已经有所发展或是发生改变。

    并发数 10,偶数请求立即完成,奇数请求被挂起超过 120 秒,是使用方法不对吗?

    import asyncio import aiohttp import time async def get(s, i): start = time.time() async with s.get('URL') as r: await r.read() print(i, ': {} s'.format(round(time.time() - start, 2))) async def test(): async with aiohttp.ClientSession() as s: await asyncio.gather(*[get(s, i) for i in range(10)]) if __name__ == "__main__": loop = asyncio.get_event_loop() loop.run_until_complete(test()) 

    结果

    0 : 0.38 s 8 : 0.4 s 2 : 0.57 s 6 : 0.6 s 4 : 0.6 s 1 : 129.49 s 9 : 129.5 s 3 : 129.52 s 7 : 129.57 s 5 : 129.63 s 
    6 条回复    2021-06-22 11:16:44 +08:00
    Kobayashi
        1
    Kobayashi  
       2021-06-19 10:19:56 +08:00
    无法复现。测试 URL https://httpbin.org/headers

    python test_aiohttp.py
    7 : 1.16 s
    1 : 1.16 s
    4 : 1.16 s
    9 : 1.16 s
    6 : 1.16 s
    2 : 1.17 s
    8 : 1.17 s
    3 : 1.26 s
    5 : 1.26 s
    0 : 1.27 s
    Multicom
        2
    Multicom  
    OP
       2021-06-20 04:15:39 +08:00
    @Kobayashi 经测试,httpbin.org 确实没有问题,但 yandex.ruwww.google.com 均存在不同数量的请求被挂起 120~240 秒
    onlyzdd
        3
    onlyzdd  
       2021-06-20 17:13:17 +08:00
    @Multicom 经测试,无法复现
    Multicom
        4
    Multicom  
    OP
       2021-06-20 18:23:24 +08:00
    @onlyzdd 请问 Python 和 aiohttp 分别是什么版本?当前环境下一直存在该问题
    ```
    root@host ~ # python3 -V
    Python 3.7.3
    root@host ~ # pip3 show aiohttp | grep Version
    Version: 3.7.4.post0
    root@host ~ # uname -a
    Linux Debian-104-buster-64-minimal 5.12.10-xanmod1-cacule ...
    ```
    onlyzdd
        5
    onlyzdd  
       2021-06-21 08:39:46 +08:00
    @Multicom 应该是网络问题吧
    Kobayashi
        6
    Kobayashi  
       2021-06-22 11:16:44 +08:00
    https://www.google.com

    python test_aiohttp.py
    0 : 1.88 s
    7 : 1.89 s
    6 : 1.9 s
    9 : 1.93 s
    8 : 1.94 s
    4 : 1.97 s
    3 : 1.97 s
    2 : 1.97 s
    1 : 2.02 s
    5 : 2.03 s

    https://yandex.ru

    python test_aiohttp.py
    0 : 3.08 s
    1 : 3.07 s
    5 : 3.1 s
    7 : 3.14 s
    3 : 3.16 s
    4 : 3.16 s
    2 : 3.17 s
    8 : 3.17 s
    6 : 3.18 s
    9 : 3.21 s
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