Asterisk Background performance test

Goal - to run at least 700 calls on this server.

Hardware

• Local LAN with 100mb cheap DLink switch
• Laptop to initiate calls over sipp
• Tested server:

HP Proliant DL160 G5 E5405
1 x Quad Core Xeon 2Ghz
2 Gb RAM
Asterisk 1.4.18.1
Centos 5.2

Asterisk configuration

For test standard /var/lib/asterisk/sounds/tt-monkeys.gsm from HDD (not from RAM) was used.

sip.conf

[general]
context=playback_test
;rtptimeout=60  
;rtpholdtimeout=300

[1000]
type = friend
host = dynamic
username = 1000
secret = 1000
nat = no
context = playback_test
disallow = all
allow = alaw

extensions.conf

[playback_test]
exten => _X.,1,Answer
exten => _X.,2,Background(tt-monkeys)
exten => _X.,3,Goto(2)

sipp

./sipp -inf users.csv -sf uac_gsm.xml -i 192.168.0.130 -s 123 192.168.0.191

File:Uac gsm.xml <-- uac_gsm.xml file

Testing

Starting from 500 calls we were increasing calls in 20 cps rate (calls per second).

Stats can be seen on following screenshots. Accumulated stats are at the end.

At each step we dialed additionally with X-Pro to test how it sounds.

• 504 calls
• 605 calls
• 703 calls
• 806 calls
• 909 calls
• 1002 calls
• 1143 calls

Results

At 1143 network limit was reached and calls started to drop.

We were able to reach our goal - e.g. 700 sim. calls on this server.

Future

In future I see no problem to reach 2000 calls, changes which should be made:

• smaller codec should be used, e.g. GSM
• 1 Gbit network instead of 100 Mbit we used
• more RAM, second CPU, sound files stored into RAM instead of HDD