[SR-Users] UAC reg_random_delay

[Daniel-Constantin Mierla]

Hello,

registrations are sent on a timer callback function executed every N
secods that is specified via a modparam (check the readme). If the next
timer callback is going to be executed after the delay value (or when
the registration expires), then the (new) registrations are sent on the
current callback execution. Could be this situation.

Cheers,
Daniel

On 03.11.21 08:36, Henning Westerholt wrote:
>
> Hello Sergiu,
>
>  
>
> Interesting. I suspected something like this in the past as well but
> never looked into the randomness features in uac.
>
>  
>
> Let’s wait a bit if somebody else might comment on it, otherwise
> please open an issue about it on our tracker.
>
>  
>
> Cheers,
>
>  
>
> Henning
>
>  
>
> -- 
>
> Henning Westerholt – https://skalatan.de/blog/ <https://skalatan.de/blog/>
>
> Kamailio services – https://gilawa.com <https://gilawa.com/>
>
>  
>
> *From:* Sergiu Pojoga <pojogas at gmail.com>
> *Sent:* Wednesday, November 3, 2021 4:41 AM
> *To:* Henning Westerholt <hw at gilawa.com>
> *Cc:* Kamailio (SER) - Users Mailing List <sr-users at lists.kamailio.org>
> *Subject:* Re: [SR-Users] UAC reg_random_delay
>
>  
>
> Hi Henning,
>
>  
>
> That's my understanding as well, but in reality seems like it
> all happens simultaneously, without some kind of delay.
>
>  
>
> Here's what I have:
>
> ·         /modparam("uac", "reg_random_delay", 20)/
>
> ·         10 uac records
>
> ·         expires=300
>
> ·         reg_delay=0
>
>  
>
> kamcmd uac.reg_dump | egrep delay
> reg_delay: 13
> reg_delay: 7
> reg_delay: 3
> reg_delay: 2
> reg_delay: 8
> reg_delay: 1
> reg_delay: 2
> reg_delay: 14
> reg_delay: 17
> reg_delay: 18
>
> Following restart of Kamailio:
>
> ·         1st  x10 REGISTERs are all sent out the same millisecond.
>
> ·         Contacts saved, received 200 OK with Expires: 300
>
> ·         after 280 seconds, another x10 REGISTERs are all sent out
> the same millisecond
>
> ·         and so on
>
> Thanks.
>
>  
>
> On Tue, Nov 2, 2021 at 2:59 PM Henning Westerholt <hw at gilawa.com> wrote:
>
>     Hello,
>
>      
>
>     this are two different concepts:
>
>      
>
>     ·reg_random_delay is a global parameter to randomize the
>     registration delay for the records
>
>     ·reg_delay is a parameter for the individual contacts
>
>      
>
>     So it seems to randomize the reg_delay value due to the set
>     reg_random_delay for records with reg_delay = 0.
>
>     Could you maybe also observe a second registration after the
>     initial registration, if it stills send out all requests the same
>     time?
>
>      
>
>     Cheers,
>
>      
>
>     Henning
>
>      
>
>     -- 
>
>     Henning Westerholt – https://skalatan.de/blog/
>     <https://skalatan.de/blog/>
>
>     Kamailio services – https://gilawa.com <https://gilawa.com/>
>
>      
>
>     *From:* sr-users <sr-users-bounces at lists.kamailio.org> *On Behalf
>     Of *Sergiu Pojoga
>     *Sent:* Monday, November 1, 2021 4:20 PM
>     *To:* Kamailio (SER) - Users Mailing List
>     <sr-users at lists.kamailio.org>
>     *Subject:* [SR-Users] UAC reg_random_delay
>
>      
>
>     Hi there,
>
>      
>
>     May I know what exactly is supposed to be "delayed" in the UAC
>     registration?
>
>      
>
>     /modparam("uac", "reg_random_delay", 20)/
>
>      
>
>     I have records stored in DB with /reg_delay=0/. When
>     doing /uac.reg_dump/, I do see the value of /reg_delay/ being
>     random for various records.
>
>      
>
>     However, after restarting Kamailio, the registrations are all sent
>     out *simultaneously*, there doesn't seem to be a "delay", whatever
>     the purpose is supposed to be.
>
>      
>
>     Can someone clarify please?
>
>      
>
>     Kamailio 5.5.0
>
>      
>
>     Thanks. Regards,
>
>     --Sergiu
>
>
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-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
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