Experimental Evaluation for Scalability and QoS in a VOD System

Dongmahn Seo, Hanmin Bang, Nansook Heo, Inbum Jung, and Yoon Kim “Experimental Evaluation for Scalability and QoS in a VOD System”, Proceeding of the IEEE 2007 International Conference on Computational Science and its Applications, pp. 33-38, Aug. 2007.

Fifth International Conference on Computational Science and Applications

 

Experimental Evaluation for Scalability and QoS in a VOD System ∗
Dongmahn Seo, Hanmin Bang, Nansook Heo, Inbum Jung, Yoon Kim
Department of Computer Science and Engineering
Kangwon National University
Hyoja, Chuncheon, 200-701, Korea
{dmseo, hmbang, nsheo, ibjung, yooni}@snslab.kangwon.ac.kr

Abstract

In this paper, the performance scalability in clusterbased Video-On-Demand (VOD) servers is studied with several grouping configurations of cluster nodes. To find performance bottlenecks of VOD servers, the monitoring functions are employed and the maximum Quality of Service (QoS) streams are measured under the various requests including VCR functions. From detailed experimental results, a new admission control method is proposed, that is based on available system resources and the actual amount of resource consumed for QoS streams. The proposed method provides not only the more scalable QoS in cluster-based VOD servers then legacies but also the enhancement of resource utilization by guaranteeing the maximum number of QoS streams than legacies.