[Freeswitch-users] BLF under high load

Guillermo Ruiz Camauer grcamauer at gmail.com
Wed Mar 10 17:07:53 UTC 2021

>From your description, it sounds like the DB is not keeping up with the
updates FreeSwitch is making.  Have you tried tuning the db?  More memory,
faster/more disks?


On Wed, Mar 10, 2021 at 1:16 PM Peter Steinbach <lists at telefaks.de> wrote:

> Hello
> we have a Freeswitch installation for a multi tenant environment. We have
> extensively tested our Freeswitch for all call scenarios and all worked
> fine. This is the good news.
> However, under higher load (>250 Channels and  >6000 Subscriptions),
> presence does not seem to work reliably. I've found some ealier posts on
> this issue, which seem to lead to the following 2 solutions
>    - use PostgreSQL (we use Mariadb via ODBC, also tested mod_mariadb,
>    which made things worse)
>    - Move presence handling to Kamailio
> As your environment is based on MySQL, we do not want to move to
> PostgreSQL without knowing, whether this will improve the situation.
> So far we are catching events via ESL or even grepping the network and
> correct the status of presence informatons sent to the phone. However we
> discover, that even if we send corrected PRESENCE_IN via event socket, our
> Freeswitch keeps on sending the wrong BLF information afterwards to the
> phone. Means BLFs are blinking or in state red event if the watched phone
> is not in a call. So at present we are grepping all presence informations
> on the network, crosscheck this with the channels table and resend the
> corrected BLF status via event_socket if needed. But still this is not
> sufficiant.
> So I am now asking the community: What is your approach to overcome this?
>    - Do newer Freeswitch versions perform better for this case?(Ours is
>    "FreeSWITCH Version 1.10.5-release+git~20200818T185121Z")
>    - which work have you done to overcome this?
>    - does anybody have an idea how to query all internal presence status
>    from Freewitch or maybe how to correct it?
> Thank you in advance. Any help is appreciated.
> Peter
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Guillermo Ruiz Camauer
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