[Freeswitch-users] mod_callCenter scalability

Ítalo Rossi italo at freeswitch.org
Sat Jan 23 01:15:08 MSK 2016

Hi Varsha,

> On 22 de jan de 2016, at 02:18, Varsha Agarwal <vagarwal at vertical.com> wrote:
> Hi,
> Does anyone have any data on how mod_callCenter scales? How many queues, concurrent calls, number of agents can be supported on one instance of FreeSwitch? I looked through the whole documentation but did not find any data.

I have a scenario running more than 150 queues, and 100 agents simultaneously (300+ agents in total). We process more than 10k calls per day between 0600am and 1800pm, sometimes we have more than 150 members waiting in the queue plus 90+ callers talking to agents. 

The server has a Xeon(R) CPU E5-2603 (4 cores 4 threads 1.8Ghz) 8GB RAM, two 500GB 7200 SATA disks. We’re also running our application stack for reporting and call control. We rarely stay above 50% of CPU, the backend database is mariadb through odbc (we’re migrating to postgresql due to better locking and other reasons...).

As others said, it’ll be also dependant to your hardware and environment, do your load testing (sipp or switchy) and see where is your bottleneck.

Hope this helps!

> Thanks,
> Varsha
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