Python定时套接字连接 [英] Python timing a socket connection

问题描述

我希望花一些时间来完成使用TCP往返服务器的时间.使用Windows客户端时. (我会使用ping但服务器会阻止它)

I am looking to get the time taken to complete a round trip to a server using TCP. When using a windows client. (I would use ping but the server is blocking this)

我正在寻找使用python和套接字来完成此操作，而我目前拥有.

I am looking at using python and sockets to complete this and I currently have.

import time
import socket

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM )

start = time.time()
s.connect(('localhost',80))
print 'time taken ', time.time()-start ,' seconds'

s.close()

我遇到的问题是我认为连接计时器不起作用，因为我会定期获得相同的时间戳记.有人可以指出正确的方向来解决这个问题.

The issue I have is I do not think the connection timer is working as I am regularly getting the same time stamp returned. Could someone point me in the right direction to sorting out this issue.

推荐答案

在Windows上，time.time()值的粒度不够(仅1/60秒).使用 time.perf_counter() ，它在Windows上大约是1/3的微秒分辨率，而不是:

On Windows, the time.time() value does not have enough granularity (only 1/60th of a second). Use time.perf_counter() which on Windows has about 1/3rd of a microsecond resolution, instead:

start = time.perf_counter()
s.connect(('localhost',80))
print 'time taken ', time.perf_counter()-start ,' seconds'

这与 timeit模块使用的计时器相同；您可以改用 .default_timer()定义:

import timeit

start = timeit.default_timer()
# etc.

这也适用于Python 2，其中time.perf_counter()不可用，但

This also works on Python 2, where time.perf_counter() is not available, but timeit.default_timer() will reference the best-available timer for your OS (time.clock() on Windows, which there has about 1/100th of a second resolution, time.time() on other systems).

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