Acer ISDN 128 Surf USB Bedienungsanleitung PDF herunterladen (Seite 18)

Power test PII 400, 256 MB RAM with average time of calls tcs=10 s, time of test ttst=120 ms, G.729 codec

New calls

during 1

sec.

Concurent

calls

Total

Calls

created

Retranslate

calls

Successfull

calls

Failed

calls

Timeout

calls

Unaccepted

calls

Average

response

[ms]

CPU

[%]

1 11 121 0 121 0 0 0 10 1

2 21 242 0 242 0 0 0 11 2

3 31 363 0 363 0 0 0 11 3

5 52 605 0 60 0 0 0 15 32

6 62 721 0 721 0 0 0 25 82

7 210 610 2306 369 2444 64 38 200 99

Tab. 10 -Power test of asterisk PBX on PII 400 MHz machine

Note:

For measuring loading of PBX I found interesting GNU utilities SIPp. SIPp is a

performance testing tool for the SIP protocol. It includes a few basic Sip Stone user agent

scenarios UAC (User Agent Client) and UAS (User Agent Server) and establishes and releases

multiple calls with the INVITE and BYE methods. It can also read XML scenario files

describing any performance testing configuration. It features the dynamic display of statistics

about running tests (call rate, round trip delay, and message statistics), periodic CSV statistics

dumps, TCP and UDP over multiple sockets or multiplexed with retransmission management,

regular expressions and variables in scenario files, and dynamically adjustable call rates.

For testing I used 10 s long period of calls and number of incoming calls was from 1 to 7

new calls during 1 s. For our PBX is maximum 6 new incoming calls during 1s. This traffic

generate 62 concurent calls and PBX work without failed and retranslate calls yet. Elevation

number of new call makes overload of PBX see tab. 11. The principle of test is on the figure 11.

From PC are sending above defined SIP datagram to PBX on number 600. This number is

reserved for demo test of PBX. (for our test we can use voice mailbox number 1000 too). The

command for SIP flows is next: $./sipp [IP] –sn UAC –s600 –r[n] –d10

Where IP is IP of target machine, UAC defined User Agent Client, s is a call number, r defined

number n of calls during 1 s, d is duration of call in seconds.

Fig. 10 -Principles of measuring PBX loading

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 36 37

Kommentare zu diesen Handbüchern

Keine Kommentare

Acer ISDN 128 Surf USB Bedienungsanleitung Seite 18

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Vernetzung Acer ISDN 128 Surf USB