View source for Performance of a DHT Ns2

== Objectives == 

* Evaluate performance and scalability of the DHT implementation (Latency, Bandwith, Startup latency, Changes in the network structure) in Ns2 Simulator
* Comparation between DHT and traditional approaches (Flooding)
** Difference in fulfilling a request
** Difference in startup and structural change latency 
* Comparation between simulation and experimental results

== Measurement Plan ==

=== Influence Factors ===

* Size of the (core BRN) network in number of nodes: 2, 4, 16, 64, 121
* Number of clients (per BRN node): 1, 4, 16
* Changes in the network structure: Schachbrett, Social Cluster
* Charater of requests?: alle Knoten holen sich IP ungefähr gleichzeitig (jittering), hintereinander

=== Measurement Values ===

* Response time of an request (DHCP, ARP)
* Error-Rate: Antworten/Anzahl Anfragen (Wichtig: DHCP only test, ARP mit vorherigen kontrollierten DHCP-Config), ARP verschiedene Timeouts
* Used bandwidth for fulfilling a request (number of packets or bytes?): global, per Client

=== Constants during Measurement ===

* Only 1 request at a time (jittering)

=== Measurement: Latency === 

* Variable number of nodes n
* Only on client
* Measure time for fulfilling a request for DHT and Flooding
* Outcome: Diagram "Response Time against Number of Nodes"

=== Measurement: Bandwidth === 

=== Measurement: Startup Latency ===
 * 30 Seconds for BRN (Routing,...)
 * up to 10 Seconds for DHT ( 4 sec for 64 Nodes, 8 for 121 Nodes )
 * Timing:
 *** 0 BRN
 *** 30 DHT
 *** 40 DHCP
 *** 60 ARP ( DTH/Flooding) Time is test now

=== Measurement: Dynamic Changes in the Structure of the Network=== 

* Measure time for reorganization

== Measurement Setup ==

== Results ==