trace2stats is a set of AWK scripts to get node-to-node statistics from the tracefiles generated by the ns-2 network simulator.

trace2stats_v05b.tgz

aodv_3nodes_tcp.tcl

aodv_udp.tcl

[ avgStats.awk]

설명 : average throughput, average delay ,average jitter 계산

Notice that source and destination nodes' ids, as well as the flow's one are those defined by the ns-2 simulator: nodes' ids are sequential (i.e. the first node defined has id 0, the second has id 1, and so on), while the flow id can be either sequential, as for the nodes', or explicit (using the 'set id' command in OTcl).

결과 예

참고 파일 : http://www.tlc-networks.polito.it/fiore/

[instantThroughput.awk]

* 다음 awk 파일들은 새로운 트레이스 포맷($ns_ use-newtrace)을 사용

설명 : 순간의 throughput 정보를 나타내며 해당 정보는 plotgraphs를 이용하여 표현 할수 있다.

Notice that source and destination nodes' ids, as well as the flow's one are those defined by the ns-2 simulator: nodes' ids are sequential (i.e. the first node defined has id 0, the second has id 1, and so on), while the flow id can be either sequential, as for the nodes', or explicit (using the 'set id' command in OTcl).

결과 예 :

참고 파일 : http://www.tlc-networks.polito.it/fiore/

[instantJitter.awk]

* 다음 awk 파일들은 새로운 트레이스 포맷($ns_ use-newtrace)을 사용

설명: 순간 적인 jitter 정보를 나타내며 해당 정보는 plotgraphs를 이용하여 표현 할수 있다

Notice that source and destination nodes' ids, as well as the flow's one are those defined by the ns-2 simulator: nodes' ids are sequential (i.e. the first node defined has id 0, the second has id 1, and so on), while the flow id can be either sequential, as for the nodes', or explicit (using the 'set id' command in OTcl).

결과 예

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Note on jitter results

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Four different values for the jitter are calculated by trace2stats.
The formulas used are reported below:

[1] jitter(i+1) = jitter(i) + |(R(i+1)-S(i+1))-(R(i)-S(i))|
[2] jitter(i+1) = jitter(i) + |(R(i+1)-R(i))-(R(i)-R(i-1))|
[3] jitter(i+1) = jitter(i) + [ |(R(i+1)-S(i+1))-(R(i)-S(i))| - jitter(i) ] / 16
[4] jitter(i+1) = jitter(i) + [ |(R(i+1)-R(i))-(R(i)-R(i-1))| - jitter(i) ] / 16

where S(i) is the time at which packet 'i' was transmitted from the sender
R(i) is the time at which packet 'i' was received by the destination

참고 파일 : http://www.tlc-networks.polito.it/fiore/
작성 : 2006.12.08 by 임헌정
http://www.4ellene.net