[Freeswitch-users] FS failover redundancy & load balancing

Brian West brian at freeswitch.org
Thu Apr 2 04:58:58 PDT 2009

On Apr 2, 2009, at 4:13 AM, Szymon Olko wrote:

> I did not think yet about HA nor LB.
> I tested how FS handles high load. All my calls are placed in  
> mod_conference. When cpu usage gets it's limits then new calls can
> be placed but sound quality is getting worst with every next call.  
> When calls are hanged up then sound gets better. I did not test
> it to see what happens when more and more calls are created.
> FS has very low memory consumption and I think that CPU is the  
> limit. I did not notice any monitoring of CPU usage by FS, but my
> installation is limited to only few modules, so maybe I'm missing  
> something.

Load testing against the conference module is about the worst thing  
you can do... tossing 100+ people in the same conference isn't going  
to scale well for load testing because its not something you usually  
do in a real world scenario.  Usually you'll have most of the  
participants muted.

I highly recommend you try doing something like a bridge or a file  
playback from a ram disk.

>> Would love to hear some experiences of deploying FS with failover &  
>> high
> My failover is currently made by shell script which every 10 seconds  
> check for working FS and restarts it if it does not work.
> I use svn trunk so crash happens once a while, but they are  
> successfully fixed by developers.
> Once there was a problem that conference module was stuck and did  
> not respond to my commands. I made script with netcat which
> checks once a while for response and restarts if there is none.
>> load.

Brian West
brian at freeswitch.org

-- Meet us a ClueCon!  http://www.cluecon.com

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