[OpenSIPS-Users] opensips long shutdown time

[Bogdan-Andrei Iancu]

Hi Dave,

At sthutdown, opensips modules are mainly doing memory cleanup (dialog, 
transactions, caches, etc) or data flush to DB (dialogs, usrloc, etc).

As memory cleanup is predictable as time and not resource consuming, I 
would say it is something related to DB flush - some DB ops that take 
random number of (mili) seconds, depending on the DB server load.

A simple patch to report the shutdown duration of each module can be 
made if you consider it helpful - but I suspect the DB ops.

Regards,
Bogdan

Dave Singer wrote:
> Sometimes when I'm do a restart on opensips (using init.d script, with 
> some customization to handle this problem) opensips takes quite a bit 
> of time, like 30 - 50 seconds to stop. Other times it is very quick. 
> I'm using 1.6.2 and 1.6.3.
> The servers are fairly busy, less then 200 calls per sec, with around 
> 1000 sustained open calls.
> I am using dialog module and db mode is 3 (on shutdown) with 
> postgresql 8.4. However since sometimes it is very quick with the same 
> call volume it doesn't "feel" like this is the problem. Further I have 
> had it be slow to stop when testing a config that is not using dialog 
> at all and there are no active calls or any sip activity when I try to 
> stop it.
> My hunch is slightly toward it is waiting on a transaction but not so 
> sure.
>
> The pertinent part of my init.d script customizations are for after 
> sending opensips the kill <pid> signal to every 0.1 seconds check if 
> it has stopped yet then start it back up.
>
> Needless to say, having it take 50 seconds to restart, and not 
> responding to sip traffic does not make customers happy when your 
> dealing with thousands of call. :(
>
> Any thoughts or things to try would be appreciated.
>
> Thanks
>
> cando
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-- 
Bogdan-Andrei Iancu
OpenSIPS Bootcamp
20 - 24 September 2010, Frankfurt, Germany
www.voice-system.ro