[OpenSIPS-Users] Load balancing implementation case.

[Bogdan-Andrei Iancu]

hi Grygoriy,


Grygoriy Dobrovolskyy wrote:
>
>     So this number of agents is actually the capacity of each CC? like
>     how many simultaneous calls the CC can handle.
>
>
> The thing is that number can change, lets say 1 day we have 25 agents, 
> next day we have 10 agents at the same CC, the goal of the project is 
> to retrieve that information from all call centres every N minutes and 
> update their capacity to the opensips database. Now i am changing the 
> dispatcher file each morning, and i am pretty tired of that. So let's 
> say i am able to interrogate each trixbox and to retreive the number 
> of connected agents dynamicly, then i execute the mi command to update 
> the opensips database (pstn capacity) every 10 min. What do you think 
> ? Is that a good solution ? Is opensips capable to deal with such a 
> setup ?
with load_balancer module is even simpler as for changing the capacity 
of a cc you do not have actually to reload - issuing a simple mi command 
will do the job - see the 'lb_resize' command - 
http://www.opensips.org/html/docs/modules/devel/load_balancer.html#id228160
>
>
>  
>
>
>     Have you looked at the loadcbalancer module ?
>     (http://www.opensips.org/pmwiki.php?n=Resources.DocsTutLoadbalancing)
>
>     you can define the size of each CC in the DB and also change it at
>     runtime (see the MI commands)
>
>     If you need some help on this, please let me know.
>
>     Regards,
>     Bogdan
>
>
> I think load balancer is a big advance, however i am not sure if it 
> suits my needs, lets say i modify the pstn capacity of 5 CC every 1 
> hour, and we have the situation as follows: (% of agents per site)
> This is my actual config with dispatcher.
>
> CC1 17%
> CC2 14%
> CC3 15%
> CC4 18%
> CC5 17%
> CC6 19%
>
> Total 100 %
>
> The load is ~4000 call /day and growing so i would like to distrubute 
> the call's accordinly to % of each site. However if i update it in 
> real time is it possible to distribute calls by % to each CC like i do 
> it now with the load balancer ? Is it possible that call center with 
> less pstn resources however get the number of calls accordinly to 
> their % (capacity) ?
> Thank you for info.

well i would say lb is fitting better. with dispatcher you need to 
recalculate the percentages and to reload the data. with lb, you simple 
do a rezise of a cc via mi command ( see above).

and the biggest advantage of lb is that it is actually counting the 
ongoing calls for each cc to spread the call as balanced as possible.

regards,
bogdan