如何增加龍卷風超時

Question

我正在嘗試龍卷風框架。 但是我發現龍卷風在壓力測試（使用多機械化）的30秒后經常失敗。 我在多機械化中使用10個線程，並運行100秒，大約500個請求/秒。 30秒后故障率約為15％。 整個測試大約需要100秒。 從統計數據中，我意識到失敗可能是由於0.2秒后超時所致。 我搜索了幾種增加網絡超時的方法，但是沒有任何效果。

以下是我的龍卷風代碼：

import tornado.ioloop
import tornado.web

class MainHandler(tornado.web.RequestHandler):
    @tornado.web.asynchronous
    def get(self):
        self.write("Hello, world")
        self.finish()

application = tornado.web.Application([
    (r"/", MainHandler),
])

if __name__ == "__main__":
    application.listen(8000)
    tornado.ioloop.IOLoop.instance().start()

這是我的多機械化測試腳本：

import requests
import random
import time

class Transaction(object):
    def __init__(self):
        pass
    def run(self):
        r = requests.get('http://127.0.0.1:8000')
        output = r.raw.read()
        assert(r.status_code == 200)
        return output

if __name__ == '__main__':
    trans = Transaction()
    trans.run()
    print trans.custom_timers

以下是我從multimech-run獲得的錯誤消息

Traceback (most recent call last):
  File "././test_scripts/v_user.py", line 12, in run
    r = requests.get('http://127.0.0.1:8000')
  File "/Library/Python/2.7/site-packages/requests/api.py", line 54, in get
    return request('get', url, **kwargs)
  File "/Library/Python/2.7/site-packages/requests/safe_mode.py", line 37, in wrapped
    return function(method, url, **kwargs)
  File "/Library/Python/2.7/site-packages/requests/api.py", line 42, in request
    return s.request(method=method, url=url, **kwargs)
  File "/Library/Python/2.7/site-packages/requests/sessions.py", line 230, in request
    r.send(prefetch=prefetch)
  File "/Library/Python/2.7/site-packages/requests/models.py", line 603, in send
    timeout=self.timeout,
  File "/Library/Python/2.7/site-packages/requests/packages/urllib3/connectionpool.py", line 415, in urlopen
    body=body, headers=headers)
  File "/Library/Python/2.7/site-packages/requests/packages/urllib3/connectionpool.py", line 267, in _make_request
    conn.request(method, url, **httplib_request_kw)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 941, in request
    self._send_request(method, url, body, headers)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 975, in _send_request
    self.endheaders(body)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 937, in endheaders
    self._send_output(message_body)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 797, in _send_output
    self.send(msg)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 759, in send
    self.connect()
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 740, in connect
        self.timeout, self.source_address)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/socket.py", line 571, in create_connection
    raise err
error: [Errno 49] Can't assign requested address

Answer 1

要回答有關如何更改龍卷風超時的問題，您需要修改龍卷風的bind_socket函數以設置超時時間： http : //www.tornadoweb.org/documentation/_modules/tornado/netutil.html

sock.setblocking(0)
sock.bind(sockaddr)
sock.listen(backlog)
sockets.append(sock)

將第一行更改為sock.setblocking（1）。 根據文檔： http : //docs.python.org/library/socket.html#socket.socket.settimeout ：

將超時設置為None將禁用套接字操作的超時s.settimeout（None）等同於s.setblocking（1）。

但是，正如評論中建議的那樣，我認為您應該看看分配負載。