On the impact of workload burstiness on disk performance

  • Authors:
  • María E. Gómez;Vicente Santonja

  • Affiliations:
  • Univ. Politécnica de Valencia;Univ. Politécnica de Valencia

  • Venue:
  • Workload characterization of emerging computer applications
  • Year:
  • 2001

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Abstract

This chapter presents a deep study of disk performance using asynthetic disk workload generator that can reproduce theself-similar property of disk work-load. We show that modeling thisproperty has serious implications on disk performance. Theperformance results are significantly different depending on thelevel of self-similarity. Therefore, ignoring this property canresult in unrealistic conclusions. In this chapter, we also studythe relations between this property and other parameters of theworkload. Finally, we also present how some parameters of diskdrives can affect disk performance when the self-similar propertyis taken into account in disk workload modeling.