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

[James Tranovich]

Hello Bogdan,

Thanks for your reply! We are using opensips 1.8.0-notls (x86_64/linux).

We do not think this issue is load related but perhaps older registrations
have not yet expired. We will try setting the min_expires parameter to a
low number to test this hypothesis; any other approaches we could try?

Thanks once again!

James


On Thu, May 16, 2013 at 1:53 AM, Bogdan-Andrei Iancu <bogdan at opensips.org>wrote:

> **
> 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 Developerhttp://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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>
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