Performance of a DHT Implementation in the BRN Indoor Testbed

Objectives

• Evaluate performance and scalability of the DHT implementation (Latency, Bandwith, Startup latency, Changes in the network structure)
• 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
• Number of clients (TODO absolute or per BRN node)
• Changes in the network structure
• TODO Charater of requests?
• TODO Amount of stored data (number of DHT keys)?

Measurement Values

• Response time of an request (DHT/ARP/DHCP)
• Used bandwidth for fulfilling a request (number of packets or bytes?)

Constants during Measurement

• Only 1 request at a time

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: Dynamic Changes in the Structure of the Network

• Measure time for reorganization