[Python-Dev] how to debug httplib slowness

[Guido van Rossum]

Try instrumenting the actual calls to the lowest-level socket methods
(recv() and send()) and log for each one the arguments, return time,
and how long it took. You might see a pattern. Is this on Windows?
It's embarrassing, we've had problems with socket speed on Windows
since 1999 and they're still not gone... :-(

On Wed, Aug 12, 2009 at 4:05 AM, Chris Withers<chris at simplistix.co.uk> wrote:
> Hi All,
>
> I'd like to work on this issue:
>
> http://bugs.python.org/issue2576
>
> Specifically, in my case, while IE can download a 150Mb file from a local
> server in about 3 seconds, httplib takes over 20 minutes!
>
> However, I'm kinda stumped on where to start with debugging the difference.
> I've tried upping the buffer size as suggested in the issue, but it's had no
> effect...
>
> Any ideas?
>
> Chris
>
> --
> Simplistix - Content Management, Batch Processing & Python Consulting
>           - http://www.simplistix.co.uk
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-- 
--Guido van Rossum (home page: http://www.python.org/~guido/)