Re: Fastest way to retrieve and write html contents to file

From	Ben Finney <ben+python@benfinney.id.au>
Newsgroups	comp.lang.python
Subject	Re: Fastest way to retrieve and write html contents to file
Date	2016-05-02 14:49 +1000
Message-ID	<mailman.298.1462164614.32212.python-list@python.org> (permalink)
References	<ng6jie$1ap$1@dont-email.me> <85vb2xgj2i.fsf@benfinney.id.au>

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DFS <nospam@dfs.com> writes:

> Then I tested them in loops - the VBScript is MUCH faster: 0.44 for 10
> iterations, vs 0.88 for python.
>
> […]
>
> urllib2 and requests were about the same speed as urllib.urlretrieve,
> while pycurl was significantly slower (1.2 seconds).

Network access is notoriously erratic in its timing. The program, and
the machine on which it runs, is subject to a great many external
effects once the request is sent — effects which will significantly
alter the delay before a response is completed.

How have you controlled for the wide variability in the duration, for
even a given request by the *same code on the same machine*, at
different points in time?

One simple way to do that: Run the exact same test many times (say,
10 000 or so) on the same machine, and then compute the average of all
the durations.

Do the same for each different program, and then you may have more
meaningfully comparable measurements.

-- 
 \     “We are no more free to believe whatever we want about God than |
  `\         we are free to adopt unjustified beliefs about science or |
_o__)              history […].” —Sam Harris, _The End of Faith_, 2004 |
Ben Finney

Thread

Fastest way to retrieve and write html contents to file DFS <nospam@dfs.com> - 2016-05-02 00:06 -0400
  Re: Fastest way to retrieve and write html contents to file Stephen Hansen <me+python@ixokai.io> - 2016-05-01 21:34 -0700
  Re: Fastest way to retrieve and write html contents to file Chris Angelico <rosuav@gmail.com> - 2016-05-02 14:40 +1000
    Re: Fastest way to retrieve and write html contents to file DFS <nospam@dfs.com> - 2016-05-02 00:50 -0400
      Re: Fastest way to retrieve and write html contents to file Stephen Hansen <me+python@ixokai.io> - 2016-05-01 22:00 -0700
        Re: Fastest way to retrieve and write html contents to file DFS <nospam@dfs.com> - 2016-05-02 01:04 -0400
          Re: Fastest way to retrieve and write html contents to file Chris Angelico <rosuav@gmail.com> - 2016-05-02 15:12 +1000
          Re: Fastest way to retrieve and write html contents to file Stephen Hansen <me+python@ixokai.io> - 2016-05-01 22:17 -0700
          Re: Fastest way to retrieve and write html contents to file Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2016-05-02 15:57 +1000
  Re: Fastest way to retrieve and write html contents to file Ben Finney <ben+python@benfinney.id.au> - 2016-05-02 14:49 +1000
    Re: Fastest way to retrieve and write html contents to file DFS <nospam@dfs.com> - 2016-05-02 01:00 -0400
      Re: Fastest way to retrieve and write html contents to file Stephen Hansen <me+python@ixokai.io> - 2016-05-01 22:15 -0700
        Re: Fastest way to retrieve and write html contents to file DFS <nospam@dfs.com> - 2016-05-02 01:59 -0400
          Re: Fastest way to retrieve and write html contents to file Stephen Hansen <me+python@ixokai.io> - 2016-05-01 23:27 -0700
            Re: Fastest way to retrieve and write html contents to file DFS <nospam@dfs.com> - 2016-05-02 03:37 -0400
              Re: Fastest way to retrieve and write html contents to file Stephen Hansen <me+python@ixokai.io> - 2016-05-02 00:58 -0700
              Re: Fastest way to retrieve and write html contents to file Michael Torrie <torriem@gmail.com> - 2016-05-02 22:06 -0600
                Re: Fastest way to retrieve and write html contents to file DFS <nospam@dfs.com> - 2016-05-03 00:24 -0400
                Re: Fastest way to retrieve and write html contents to file Tim Chase <python.list@tim.thechases.com> - 2016-05-03 10:28 -0500
                Re: Fastest way to retrieve and write html contents to file DFS <nospam@dfs.com> - 2016-05-03 13:00 -0400
                Re: Fastest way to retrieve and write html contents to file Tim Chase <python.list@tim.thechases.com> - 2016-05-03 13:41 -0500
                Re: Fastest way to retrieve and write html contents to file DFS <nospam@dfs.com> - 2016-05-04 02:10 -0400
      Re: Fastest way to retrieve and write html contents to file Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2016-05-02 16:05 +1000
        Re: Fastest way to retrieve and write html contents to file DFS <nospam@dfs.com> - 2016-05-02 02:47 -0400
          Re: Fastest way to retrieve and write html contents to file Chris Angelico <rosuav@gmail.com> - 2016-05-02 17:19 +1000
            Re: Fastest way to retrieve and write html contents to file DFS <nospam@dfs.com> - 2016-05-02 21:51 -0400
              Re: Fastest way to retrieve and write html contents to file Chris Angelico <rosuav@gmail.com> - 2016-05-03 12:00 +1000
                Re: Fastest way to retrieve and write html contents to file DFS <nospam@dfs.com> - 2016-05-02 22:01 -0400
          Re: Fastest way to retrieve and write html contents to file Peter Otten <__peter__@web.de> - 2016-05-02 10:42 +0200
            Re: Fastest way to retrieve and write html contents to file DFS <nospam@dfs.com> - 2016-05-02 21:52 -0400
  Re: Fastest way to retrieve and write html contents to file Chris Angelico <rosuav@gmail.com> - 2016-05-02 14:53 +1000
  Re: Fastest way to retrieve and write html contents to file Tim Chase <python.list@tim.thechases.com> - 2016-05-02 07:38 -0500

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