[OpenSIPS-Users] Odd opensips REGISTER/INVITE behavior for many simultaneous users

[Bogdan-Andrei Iancu]

Hello James,

No, there is no such known bug or issue. What I suspect is that there
are short intervals (milisecs) where an AOR is not registered - this may
happen because :
    - the test tool is not performing properly under high load and fails
to do re-register before old registration expires.
    - OpenSIPS is overloaded (too few processes ?) and it is not able to
process traffic in realtime (check the LOAD related statistics).

What OpenSIPs versions are you using ?

Regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com


On 05/15/2013 01:56 AM, James Tranovich wrote:
> Hello all --
>
> First, we love opensips :)
>
> Lately, we have been running into a strange issue which seems to be
> related to handling a ton of REGISTER messages. Basically, we have a
> test script that tries to simulate about 50 to 100 simultaneous calls;
> they all register en masse and then randomly start placing calls to
> another test number (after a random time interval). Every once in a
> while, though, an INVITE won't go through because opensips apparently
> can't find that phone number. Oddly enough, if we do an "opensipsctl
> online" immediately before/after, that command shows that, in fact,
> the recipient's number is present and presumably already registered.
> SIP logs/ngrep tracing confirm this.
>
> I was wondering if this is a known bug. This behavior only happens
> when registering a certain number of calls at once; if we test with a
> low number of calls (10, say), this behavior does not happen. It may
> be that we are spamming opensips with too many REGISTER messages
> (authentication is required, so two REGISTER messages are sent, the
> first w/o auth, the second with auth). But I don't see why opensips
> should have problems with this.
>
> Any thoughts on this? Is this a known issue already? (Searching for
> this issue didn't yield much). Thanks!
>
> James
>
>
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