You can do a packet trace using tcpdump: sudo tcpdump -s 65000 -w kannel_trace.pcap host <smsc ip> and port <smsc port>
You can then open it with ethereal. Hope it helps, Alex On Fri, Apr 15, 2011 at 2:51 PM, Rapture <[email protected]> wrote: > Regular Kannel. > > > > I’m not familiar with a packet trace or zero win errors… > > > > *From:* Alejandro Guerrieri [mailto:[email protected]] > *Sent:* Friday, April 15, 2011 3:47 PM > > *To:* Rapture > *Cc:* [email protected] > *Subject:* Re: Slow RX incoming > > > > Make a packet trace and check if you get "zero win" errors. If you get tons > of DLR's and your DB is not fast enough that would explain the problem. > > > > Art you using a "regular" Kannel or did you apply any patches to it? > > > > Regards, > > > > Alex > > On Fri, Apr 15, 2011 at 2:35 PM, Rapture <[email protected]> wrote: > > Hi Alex, > > > > The issue is persistent but all has been well till about 3 weeks ago when I > started receiving huge bursts of messages. DLR is enabled and DB is ok as > other application is working properly. > > > Regards, > > > > Rapture > > > > *From:* Alejandro Guerrieri [mailto:[email protected]] > *Sent:* Friday, April 15, 2011 12:14 PM > > > *To:* Rapture > *Cc:* [email protected] > *Subject:* Re: Slow RX incoming > > > > Is the issue constant, or only happens at some specific times during the > day? > > > > Do you have DLR's enabled? DB-backed? Maybe the issue happens when you're > getting lots of them? > > > > Perhaps a long shot, but might be worth checking: try doing a packet trace > and verify you're not getting TCP "zero win" errors. > > > > Regards, > > > > Alex > > On Thu, Apr 14, 2011 at 7:27 AM, Rapture <[email protected]> wrote: > > Hi guys, > > > > We’ve been running a campaign averaging 350,000 messages a day. Lately I > noticed kannel does not retrieve them as fast as it needs to hence a > backlog builds on the operator’s end. This is only affecting one of the > operators. On calling them, they insisted that it is Kannel which determines > how many RX messages to pull. I tried an old SMPP client software I’d > written in Delphi and it cleared all the backlog in less than 5 mins and > continues to do so in real time. All data is dumped into the same mysql > table. I’ve tried using throughput in kannel with no success. I’ve even > opened upto 15 channels to the same operator without success. > > > > What could be the issue? How can I speed up my intake of messages? > > > > Distraught, > > > > TR > > > > > > > > >
