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