urllib2 slow for multiple requests

Tomas Svarovsky svarovsky.tomas at gmail.com
Thu May 14 11:00:50 CEST 2009


On May 13, 4:55 pm, cgoldberg <cgoldb... at gmail.com> wrote:
> > Bascally it just grabs a page xy
> > times and tells me how long it took.
>
> you aren't doing a read(), so technically you are just connecting to
> the web server and sending the request but never reading the content
> back from the socket.  So your timing wouldn't be accurate.
>
> try this instead:
> response = urllib2.urlopen(req).read()
>
> But that is not the problem you are describing...

Thanks for this pointer, didn't come to my mind.

> > when I increase the number of repetitions, it is
> > slowing down considerably (1 is like 3 ms, 100 takes 6 seconds).
> > Maybe it is a known issue in urllib2
>
> I ran your code and can not reproduce that behavior.  No matter how
> many repetitions, I still get a similar response time per transaction.
>
> any more details or code samples you can provide?
>

I don;t know, I have tried the program on my local MacOs, where I have
several python runtimes installed and there is huge dfference between
result after running at 2.6 and 2.4. So this might be the problem.
When ran on the 2.6 result are comparable to php and better than ruby,
which is what I expect.

The problem is, that CentOS is running on the server and there is only
2.4 available. On wich version did you ran these tests?

Thanks

> -Corey Goldberg




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