I think you will find that gprs devices will drop off the network but the router will still keep the coonection open. The gprs device will then reconnect on a different connection and port. So you will need to clean up old connections used by that device.
Hope that helps John Aherne On Fri, Mar 19, 2010 at 2:53 PM, Don Schoeman <[email protected]> wrote: > Hi Andrew, thanks for taking the time to comment on my email. > > I'm going to have to study your proposal to switch to poll/epoll anyway > since I am expecting more and more connections to be made over time. This > particular application is used to communicate with a bunch of GPRS devices > and I'm starting to think that these devices might not be closing a > connection properly which could perhaps lead to this particular problem. I > am going to discuss it with the manufacturers of these devices as well. > > Thanks again for your help. > > Kind Regards, > Don > > > Andrew Bennetts wrote: > > Don Schoeman wrote: > > > Hi guys, I have started having this problem a few weeks ago and it > happens about once a week after which I have to restart my Twisted > based server to function again. It seems to be happening when I > make RPC calls using twisted.web.xmlrpc.Proxy. I have reason to > believe that I am either running out of file handles or connection > limits. I have up-sized my connection limits and ulimit -n gives > me 9000. > > > Note though that select() has a builtin limit, which varies by platform > but is probably 1024 for you. So perhaps try the poll or epoll reactor > instead. > > > > I receive less than 30 connections though so there must be some > kind of leak. The error I'm getting is the following: > > > 30 is much less than 1024, though, so a leak does sound probable. > > [...] > > > Now I know this is a very generic error and it could mean a lot of > things, but how would I even start tracking the leak down? Is there > a way I can try and track the number of file descriptors? > > > There's always strace, or looking in /proc/PID/fd. > > > > I am using Twisted version 8.2.0 on Ubuntu Server Edition 9.10 > > > Maybe try upgrading Twisted, preferably to 10.0.0? I'm not sure if a > bug related to your problems was fixed since 8.2.0, but a lot of bugs > have been fixed in that ~2 years. Hopefully there's a PPA somewhere > with a newer Twisted for your version of Ubuntu. > > -Andrew. > > > _______________________________________________ > Twisted-Python mailing > [email protected]http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python > > > _______________________________________________ > Twisted-Python mailing list > [email protected] > http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python > >
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