Asterisk Background performance test

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Performance tests

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

Contents 1 Hardware 2 Asterisk configuration 2.1 sip.conf 2.2 extensions.conf 3 sipp 4 Testing 5 Results 6 Future

[edit] 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

[edit] Asterisk configuration

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

[edit] 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

[edit] extensions.conf

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

[edit] 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

[edit] Testing

Starting from 500 calls, we increased calls at a rate of 20 calls per second (cps).

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

[edit] Results

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

We were able to reach our goal - that is, 700 sim. calls on this server.

[edit] Future

In future I see no problem in reaching 2000 calls. Changes that should be made:

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