The problem exists even if the server part is replaced by a server
written in C. I only wrote up the dummy server in python to be able to
provide a testcase.

The C server works with reasonable speed when connected to a client
written in perl by the way. My employer is quite disappointed with
Python's performance... (He provided the profiler data for the Mac by
the way) I almost wish that I did something wrong, but this does not
seem to be the case.

Nevertheless, I will try out your suggestion.

Thanks for replying,

Thorben

2008/9/11 Antoine Pitrou <report@bugs.python.org>:
>
> Antoine Pitrou <pitrou@free.fr> added the comment:
>
> Thorben, is the problem still there if you use fork() rather than
> launching a separate thread for the server?
>
> The implementation of the recv() method is straightforward and I don't
> see anything that could cause a huge latency there, it's just a simple
> wrapper over the C library's recv() function. The waiting certainly
> occurs inside the OS rather than inside the Python interpreter.
>
> ----------
> nosy: +pitrou
>
> _______________________________________
> Python tracker <report@bugs.python.org>
> <http://bugs.python.org/issue3766>
> _______________________________________
>