A Performance Study of Dynamic Replication Techniques in Continuous John C.S. Luj Media Servers* ChengFu Chou Leana Golubchik Dept. of Computer Science & UMIACS University of Maryland {chengfu, leana}@cs.umd.edu Dept. of Computer Science & Engineering The Chinese University of Hong Kong cslui@cs.cuhk.edu.hk Introduction Multimedia applications are emerging in education, information dissemination, entertainment, as well as many other environments. Such applications place high demands for quality-of-service (QoS), performance, and reliability on storage servers and communication networks. These stringent requirements make design of cost-effective and scalable systems difficult, and therefore efficient adaptive and dynamic resource management techniques can be of great help in improving resource utilization and consequently improving performance and scalability of such systems. In this work, we focus on policies, rather than mechanisms, for dynamic resource management, and specifically, in the context of continuous media (CM) servers. In a CM storage server, the choice of data placement techniques can have a significant effect on the ability of the system to utilize resources efficiently. Existing data placement techniques in conjunction with scheduling algorithms address two basic inefficiencies that can arise in such systems: (1) various overheads in reading data from storage devices, e.g., due to disk arm movement and
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A performance study of dynamic replication techniques in continuous media servers
Chou, ChengFu; Golubchik, Leana; Lui, John C. S.
Follow ACM SIGMETRICS Performance Evaluation Review
, Volume 27 (1)
Association for Computing Machinery – Jun 1, 1999
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