[OpenSIPS-Users] Route calls based on CPS rate

[Ovidiu Sas]

http://www.opensips.org/html/docs/modules/1.6.x/ratelimit.html#id228149
When you specify a limit in the definition of a pipe, that limit will
be divided by the timer interval in order to get the cps.
If you want accurate cps control, then you need to set the
timer_interval to a low value.

For example:
modparam("ratelimit", "timer_interval", 1)
modparam("ratelimit", "pipe", "0:TAILDROP:200")
=> 200/1=200cps

modparam("ratelimit", "timer_interval", 5)
modparam("ratelimit", "pipe", "0:TAILDROP:200")
=> 200/5=40cps
In this case, you can have 200 messages in the first second and no
messages for the next 4s and the cps limitation will not kick in.
For the first second you will have a cps of 200 and for the next 4s
the cps will be 0, but on average you will have 40cps.


Hope this helps.

Regards,
Ovidiu Sas

On Thu, Feb 25, 2010 at 3:45 AM, rajib deka <rajibdk at gmail.com> wrote:
> Thanks to all. I have doubt again, what is the use of timer_interval and how
> we can utilize it with the CPS limit for pipes.
>
> Regards
> Rajib
>
> On Mon, Feb 15, 2010 at 10:45 PM, Ovidiu Sas <osas at voipembedded.com> wrote:
>>
>> Yes, you can use the ratelimit module to control the cps.
>> You will need to assign a pipe for each outbound destination.
>>
>> Regards,
>> Ovidiu Sas
>>
>> On Mon, Feb 15, 2010 at 11:50 AM, rajib deka <rajibdk at gmail.com> wrote:
>> > Hi Bogdan,
>> >
>> > I agree with you. But I have seen that RATELIMIT module is doing
>> > something
>> > like that. Can we use that module for each gateway by identifying the
>> > gateway at run-time, like
>> >
>> > after LB selected the destination, we can have something like
>> > if($du == <sip:some gateway>) {
>> >
>> >
>> > if (!rl_check_pipe("1") {
>> >               rl_drop();
>> >               exit;
>> >       };
>> >
>> > }
>> >
>> > where the pipe is with some cps value and INVITE queue. Is this will be
>> > efficient.
>> >
>> > Regards
>> > Rajib
>> >
>> > On Mon, Feb 15, 2010 at 6:58 PM, Bogdan-Andrei Iancu
>> > <bogdan at voice-system.ro> wrote:
>> >>
>> >> Hi Rajib,
>> >>
>> >> LB module is doing routing based on the load as current ongoing calls
>> >> per
>> >> destination.
>> >>
>> >> To compute the CPS for a destination can be a bit tricky  - there is no
>> >> module for doing it, Probably you can try to count the call using some
>> >> shared mem variable (directly in script) and to try to calculate on the
>> >> fly
>> >> the CPS, but as said, does not seams an easy one (from mathematical
>> >> perspective).
>> >>
>> >> Regards,
>> >> Bogdan
>> >>
>> >> rajib deka wrote:
>> >>>
>> >>> Hello all,
>> >>> Is it possible to route calls based on cps rate using OpenSIPS load
>> >>> balancer module. We have an enterprise implementation here using
>> >>> OpsnSIPS
>> >>> load_balancer, which is handling 100 cps using our different trunks.
>> >>> So we
>> >>> want to place calls according to trunks cps capacity. Is there any
>> >>> other
>> >>> module to handle this situation. your suggestion will be much
>> >>> appreciable.
>> >>> --
>> >>> Rajib Deka
>> >>> Software Engineer
>> >>> Servion Global Solution
>> >>> Chennai, India
>> >>>
>> >>> Mobile No: + 91 80157 09130
>> >>
>> >>
>> >> --
>> >> Bogdan-Andrei Iancu
>> >> www.voice-system.ro
>> >>
>> >
>> >
>> >
>> > --
>> > Rajib Deka
>> > Software Engineer
>> > Servion Global Solution
>> > Chennai, India
>> >
>> > Mobile No: + 91 80157 09130
>> >
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>> >
>> >
>>
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>
>
> --
> Rajib Deka
> Software Engineer
> Servion Global Solution
> Chennai, India
>
> Mobile No: + 91 80157 09130
>
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