[sr-dev] Using timers

[Carsten Bock]

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
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>



-- 
Carsten Bock
CEO (Geschäftsführer)

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