July 2010
Intermediate to advanced
900 pages
40h 1m
English
Content preview from Memory Systems
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CHAPTER 23
Performance Testing
Performance testing is an important part of the design and development of a new disk drive. This chapter is devoted to the discussion of testing and measuring the performance of a disk drive. Because of the complexity of the entire disk drive and the sensitivity of its behavior to different environments and access sequences, precise performance information can only be obtained by running tests on the actual drive. Simulation may be able to predict the mechanical timing quite accurately. Exact prediction of the cache’s effect is harder, as the amount of data that gets prefetched is sensitive to how accurately the time available for prefetching is simulated. This available time for prefetching depends not only on ...
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