[sr-dev] Using timers

[Carlos Ruiz Díaz]

Hi Carsten,

I'll take a look to that module to learn how it should be done.

Thanks a lot!.

Carlos.

On Fri, Feb 22, 2013 at 1:45 PM, Carsten Bock <carsten at ng-voice.com> wrote:

> Hi Carlos,
>
> i hope you are doing fine :-)
> You may run into troubles, if your timer process takes too long; so
> you might consider using a separate process for "expensive"
> operations, maybe you want to look at the nathelper module, which does
> the trick.
>
> Kind regards,
> Carsten
>
>
> 2013/2/18 Carlos Ruiz Díaz <carlos.ruizdiaz at gmail.com>:
> > Hello list,
> >
> > I have a custom made module which uses a timer to monitor some statuses
> in a
> > period of 1 second. Inside the function there's a loop that iterates
> over a
> > table that can contain several hundreds of items and using each of them
> to
> > perform some arithmetical operations.
> >
> > Under certain conditions, the number of items can grow to a few
> thousands in
> > really exceptional cases and I believe this situation is causing
> Kamailio's
> > slow timer process to consume more than 90% of CPU hanging up the other
> > group of processes.
> >
> > My questions are:
> >
> > - What is the best way to perform a repetitive task such as a loop in a
> > timely basis taking in consideration a precision of at least 5 seconds?
> I'm
> > currently registering a function using register_timer() call.
> >
> > - Can a loop that takes more than 1 second to complete be causing this
> > extremely high CPU consumption?
> >
> > Below is a copy of the top command when the event occurred:
> >
> > PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND
> > 22969 root      20   0 2140m  16m  14m R 98.8  0.1   7:22.03 kamailio
> >
> > Thanks in advance,
> >
> > --
> > Carlos
> > http://caruizdiaz.com
> > +595981146623
> >
> > _______________________________________________
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> > sr-dev at lists.sip-router.org
> > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-dev
> >
>
>
>
> --
> Carsten Bock
> CEO (Geschäftsführer)
>
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-- 
Carlos
http://caruizdiaz.com
+595981146623
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