Maximizing Buffer and Disk Utilizations for News On-Demand.

Raymond T. Ng, Jinhai Yang: Maximizing Buffer and Disk Utilizations for News On-Demand. VLDB 1994: 451-462

@inproceedings{DBLP:conf/vldb/NgY94,
  author    = {Raymond T. Ng and
               Jinhai Yang},
  editor    = {Jorge B. Bocca and
               Matthias Jarke and
               Carlo Zaniolo},
  title     = {Maximizing Buffer and Disk Utilizations for News On-Demand},
  booktitle = {VLDB'94, Proceedings of 20th International Conference on Very
               Large Data Bases, September 12-15, 1994, Santiago de Chile, Chile},
  publisher = {Morgan Kaufmann},
  year      = {1994},
  isbn      = {1-55860-153-8},
  pages     = {451-462},
  ee        = {db/conf/vldb/vldb94-451.html},
  crossref  = {DBLP:conf/vldb/94},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

Abstract

In this paper, we study the problem of how to maximise the throughput of a multimedia system, given a fixed amount of buffer space and disk bandwidth both pre-determined at design time. Our approach is to maximize the utilizations of disk and buffers. We propose doing so in two ways. First, we analyse a scheme that scheme that allows multiple streams to share buffers. Our analysis and preliminary simulation results indicate that buffer sharing could lead to as much as 50% reduction in total buffering requirements. Second, we develop two prefetching strategies: SP and IP. As will be demonstrated by SP, straightforward prefetching is not effective at all. In contrast, IP, which prefetches more intelligently than does SP, could be valuable in maximising the effective use of buffers and disk. Our preliminary simulation results show that IP could lead to a 40% improvement in throughput.

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Jorge B. Bocca, Matthias Jarke, Carlo Zaniolo (Eds.): VLDB'94, Proceedings of 20th International Conference on Very Large Data Bases, September 12-15, 1994, Santiago de Chile, Chile. Morgan Kaufmann 1994, ISBN 1-55860-153-8
Contents

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