Re: [Twisted-Python] epollreactor for pyicq-0.6-t

Jan. 11, 2008

      Hi Jean-Paul,

Thanks for the help. It's indeed the python 2.4.3 bug. I changed it to
2.4.4 or 2.5. It works.

The adhoc way I did to epollreactor seems to work. Maybe I am lucky.

regards,
Steven

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             Jean-Paul                                                     
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                                       Re: [Twisted-Python] epollreactor   
                                       for pyicq-0.6-t                     
             01/08/2008 11:03                                              
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On Tue, 8 Jan 2008 22:50:54 +0800, Steven ZHOU
<steven_zhou@ctl.creative.com> wrote:
...
Hi,
I hope some one could offer me some help on this. I am quite new to both
python and twisted.
The thing I do may sounds a bit wierd. I am using a pyicq-0.6-t. As
pyicq-0.6-t only works with twisted-2.2 or earlier, so I chose to install
twisted-2.2. However, I wished to use epollreactor as the default
selectreactor only supports 1024 file descriptors. So I copied the
relevant
...
files of epollreactor which is installed on twisted-2.5 to the
site-packages/twisted-2.2 directory. I copied 5 files in the total,
epollreactor.py, epoll..pyx to the twisted/internet directory, _epoll.py
_epoll.pyc and _epoll.so to twisted/python directory. I can't remember the
exact file names. I copied it with a hope that it works. I am not sure
whether I am doing thing stupid here. correct me if I am.
I don't know if this works.  I've never tried it.  The epoll reactor
implementation shares code from other parts of Twisted.  It may be
the case that that code changed between Twisted 2.2 and Twisted 2.5
in a way which will prevent epollreactor from working.  It may also
be the case that it hasn't.
...
The thing is, after I changed the reactor.py to import epollreactor,
pyicq-0.6-t seems to be using epollreactor but it still can only supports
1024 open sockets. I thought the problem is only in selectreactor? I
figured this out by doing a netstat -a -n on linux and found that
pyicq-0.6-t only opened about 1017 maximum concurrent sockets. I presume
that would mean only around 1000 connections can be made.
Although strange, but I do have a reason to use pyicq-0.6-t which is an
outdated version.
Are you using Python 2.4.3?  This sounds like it may be related to the
issue described here:

  http://jcalderone.livejournal.com/2006/05/26/

Jean-Paul

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