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A semantic-aware cache prefetching mechanism for disk array

  • Zhiqiang Liu
  • , Lifang Wang
  • , Zhike Zhang
  • , Aihua Zhang
  • , Zejun Jiang
  • Northwestern Polytechnical University Xian

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

Cache prefetching is a highly effective technique for improving I/O performance of disk array. A semantic-aware cache prefetching mechanism is designed to improve cache hit rate of disk array. The mechanism can identify some important properties of each block on the disk, and utilize that information to determine whether the block is live or dead. The allocation status (live or dead) of block is a kind of semantic information of blocks in disk array. Knowledge about semantic information of blocks can enable the mechanism to selectively cache only those live blocks. Simulation experiments have been carried out to evaluate performance of semantic-aware cache prefetching mechanism. The results show that the proposed mechanism gives a better hit rate than mechanism without semantic information for a large number of read requests. The mechanism is especially efficient when the disk capacity utilization rate is low.

源语言英语
主期刊名Proceedings - 2010 International Symposium on Computational Intelligence and Design, ISCID 2010
出版商IEEE Computer Society
95-97
页数3
ISBN(印刷版)9780769541983
DOI
出版状态已出版 - 2010
活动2010 International Symposium on Computational Intelligence and Design, ISCID 2010 - Hangzhou, 中国
期限: 29 10月 201031 10月 2010

出版系列

姓名Proceedings - 2010 International Symposium on Computational Intelligence and Design, ISCID 2010
2

会议

会议2010 International Symposium on Computational Intelligence and Design, ISCID 2010
国家/地区中国
Hangzhou
时期29/10/1031/10/10

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