[SR-Users] kamailio slow/no response for requests on particular ports

[Daniel-Constantin Mierla]

Hello,

do you have pike module loaded and enabled?

Are all requests to a port dismissed or just some of them?

Cheers,
Daniel

On 11/05/15 19:20, Karthik Srinivasan wrote:
> Hi,
>
> I have encountered an issue with kamailio and am hoping someone on
> this email distro can help:
>
> Here's my setup and description of the issue:
>
> I am running kamailio version 3.1.4. 
>
> I have the kamailio process bound to ports 5060, 5070, and 5090.  all UDP.
>
> I have several client devices registering to the kamailio registrar.
>
> The issue I have encountered is this:
>
> SIP registrations to port 5070 are fine for a period of time;  by fine
> I mean clients send SIP registration requests to kamailio; and
> kamailio responds promptly to the request.   by period of time I mean
> (this could be somewhat random) that for10 hours;  12 hours;  1
> hour; that kamailo has no issue processing requests.  after this
> random time period has elapsed, kamailo isn't able to respond to sip
> registrations and other messages in timely manner;   to the point
> where the clients timeout and have to resend their registration
> requests.  at times, kamailio does respond to the requests (with a
> significant delay) and at other times no response is received by the
> client.  the user experience is intermittent registration delays/failures.
>
> The same behavior is seen on port 5090.
>
> I have not encountered the issue yet on port 5060.
>
> During times when kamailio isn't able to respond timely to requests on
> a particular port,  requests to other ports are responded to timely.
>
> for ex:   if port 5070 encounters the issue;  port 5060 and 5090 seem
> fine.  meaning, I can point my client devices to 5060 or  5090
> and kamailio processes the requests timely.
>
> I have studied a tcp dump on the server end (kamailio side) and
> noticed that the network layer shows the messages from the client to
> be received timely while kamailio is encountering this issue.   which
> indicates to me that it probably isn't a network lag related issue. 
>
> Something at the application layer is probably causing kamailio to not
> respond timely.
>
> Furthermore the issue resolves itself after a period of time;  that
> is, kamailio begins to respond to messages timely on the problematic port.
> I haven't had a chance yet to determine exactly how long it takes to
> recover.  it certainly takes some time though.  at least 30 minutes;
> maybe more. 
>
> I can also state that the load on the kamailio system is minimal.  far
> below than what the performance metrics state it can handle.
>
> Has anyone encountered this issue where kamalio isn't responding to
> registration and other requests timely on a particular port but does
> so fine for other ports?
>
> Any help on this would be appreciated.
>
> Thanks,
>
> Karthik
>
>
>  
>
>
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Kamailio World Conference, May 27-29, 2015
Berlin, Germany - http://www.kamailioworld.com

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sip-router.org/pipermail/sr-users/attachments/20150511/9a4bc355/attachment.html>