[Freeswitch-users] Performance Testing

Hanie Maghsoudy h.maghsoudy at gmail.com
Sat Jul 7 11:46:16 MSD 2012

Hi all,

I searched for FreeSwitch call capacity, but most of the results wasn't
new. So, I wanna ask if anybody has either tested FreeSwitch's performance
recently, or got a dramatic result in real environment?

I tested call quality on this machine:

Virtual FreeSwitch server
OS: CentOS release 6.2 - x86_64
CPU: 8 processor - Intel(R) Xeon(R) CPU X5670  @ 2.93GHz
Memory: 8 G

After receiving incoming calls, FreeSwitch routed them to another sip
server, without transcoding. The other server transmitted calls by playing
an audio file.  Meanwhile, I called an extension in FreeSwitch to test the
call quality.

The result was like this:

1000 Concurrent calls
Call duration: 160s
Call rate: 6 cps (just creating channels)
Max used Memory: 1416M
Max CPU load: 0.24
Max Network throughput (recv/send): 6711k/80k
Quality: Good

This test was taken before tearing down the channels.

Then, I took another test to estimate calls per second, and it wasn't what
I was expected!

150 Concurrent calls
Call duration: 4s
Call rate: 30 cps (creating and tearing down)
Max used Memory: 1293M
Max CPU load: 4.50
Max Network throughput (recv/send): 828k/60k
Quality: Average

And when I increase call rate to 50 cps:

1000 Concurrent calls
Call duration: 4s
Call rate: 50 cps (creating and tearing down)
Max used Memory: 1730M
Max CPU load: *29.9*
Max Network throughput (recv/send): 1367k/202k
Quality: Bad

Why call per second is such a big problem? Did anyone get a better result
on this?

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