[OpenSIPS-Users] Opensips Dispatcher and PVAR pattern for load-balancing.
dhaval.it01034 at gmail.com
Wed Dec 23 17:59:42 CET 2015
Thanks for reply. I will test this on my script a quick question on this is
if we have multiple destinations how to define a weight of each how
dispatcher will take into considerations.
Let say i have two destination and following entry in DB.
ID SOCKET WEIGHT PRIORITY
1 sip:126.96.36.199:6060 100 1
2 sip:188.8.131.52:6060 200 2
3 sip:184.108.40.206:6060 300 3
How Load balance distribute a call let say we receive 10 cps ?
Any help appreciated.
On Wed, Dec 23, 2015 at 7:24 PM, Răzvan Crainea <razvan at opensips.org> wrote:
> Hi, Dhaval!
> A use case for this algorithm is setting the pv_algo_pattern as shown in
> the documentation page:
> modparam("dispatcher", "pvar_algo_pattern", "$stat(load_%u)")
> This parameter indicates that whenever you are using a ds_select_*()
> function with algorithm 9, OpenSIPS will check the load for each
> destination, and order them based on each value.
> For example, consider we have two destinations: sip:220.127.116.11 and
> sip:18.104.22.168. Algorithm 9 will evaluate for each destination the following
> $stat(load_sip:22.214.171.124) and $stat(load_sip:126.96.36.199) and order them based
> on its values. Then of course, first picks the least used one.
> All that's left for you is to update the statistic accordingly. For
> if (ds_select_dst("0", "9"))
> update_stat("load_sip:$dd", "+1");
> Hope that's clear now.
>  http://www.opensips.org/html/docs/modules/2.1.x/dispatcher#id293975
> Best regards,
> Răzvan Crainea
> OpenSIPS Solutionswww.opensips-solutions.com
> On 12/18/2015 01:05 PM, DHAVAL INDRODIYA wrote:
> Dear All,
> I am working on opensips dispatcher and found that dispatcher is able to
> do loadbalancing in function ds_select_dst.
> I have found a good description on DISPATCHER module itself it says - " *The
> pvar_algo_pattern parameter is used to determine the load on each server.
> If the parameter is not specified, then the first entry in the set is
> Now the question here is how to use this load balancing and what should be
> exact value we need to put in pvar_algo_pattern?
> How to define weight in table I mean what should be value of weight in
> table it is like number of call handling capability?
> I have found some of the reference and that some how not working i might
> be using in wrong way if any one have a good example then would be a great
> help for me.
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