Title :
Proportional delay differentiation service in DTN-enabled web servers: An adaptive control approach
Author :
Sun, Qilu ; Dai, Guanzhong ; Pan, Wenping
Author_Institution :
Coll. of Autom., Northwestern Polytech. Univ., Xi´´an, China
Abstract :
The Delay/disruption tolerant networks (DTNs) provides a new option for the future network applications, but nothing has been done for the research on how to design and deploy the Web servers which can provide performance guarantee or service differentiation on DTNs. Response delay is a key performance metric for Web servers and proportional delay differentiated service is an important DiffServ model. This paper designs a DTN-enabled Web server supporting differentiated service, and implements proportional delay differentiated service based on an adaptive control approach. Periodically the adaptive controller calculates and adjusts the number of worker threads in Web server for different types of clients according to the pre-specified delay differentiation parameters. Simulation results demonstrate that proportional delay differentiation can be achieved in the DTN-enabled Web server even under dynamic workloads, different workload distributions and varying references.
Keywords :
DiffServ networks; Internet; adaptive control; delays; file servers; proportional control; telecommunication control; DTN-enabled Web server; DiffServ model; adaptive control approach; delay tolerant network; disruption tolerant network; proportional delay differentiation service; Adaptive control; Delay; Diffserv networks; Disruption tolerant networking; Educational institutions; Electronic mail; Measurement; Protocols; Quality of service; Web server; Adaptive control; DTNs; Proportional delay differentiated service; Web servers;
Conference_Titel :
Computing, Communication, Control, and Management, 2009. CCCM 2009. ISECS International Colloquium on
Conference_Location :
Sanya
Print_ISBN :
978-1-4244-4247-8
DOI :
10.1109/CCCM.2009.5267869