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Advanced Disk Block Caching Algorithm for Disk I/O sub-system

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2007, 12(6), pp.139-146
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science

정수목 1 노경택 2

1삼육대학교
2을지대학교

Accredited

ABSTRACT

A hard disk, which can be classified as an external storage is usually capacious and economical. In spite of the attractive characteristics and efforts on the performance improvement, however, the operation of the hard disk is apparently slower than a processor and the advancement has also been slowly conducted since it is based on mechanical process. On the other hand, the advancement of the processor has been drastically performed as semiconductor technology does. So, disk I/O sub-system becomes bottleneck of computer systems' performance. For this reason, the research on disk I/O sub-system is in progress to improve computer systems' performance. In this paper, we proposed multi-level LRU scheme and then apply it to the computer systems with buffer cache and disk cache. By applying the proposed scheme to computer systems, the average access time to disk blocks can be decreased. The efficiency of the proposed algorithm was verified by simulation results.

Citation status

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