THE FRACTAL STRUCTURE OF DATA REFERENCE- P15 pdf

... mitigated by the overall load reduction due to processor buffering. 56 THE FRACTAL STRUCTURE OF DATA REFERENCE Because of their low percentages of read hits compared to overall reads, the databases ... for simplicity that the cost of memory is the same in both the processor and the storage control, the fractions of the total storage needed in the proces...

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... function of average cache residency time. x THE FRACTAL STRUCTURE OF DATA REFERENCE 1.16 IMS storage pools: distribution of record interarrival times. 30 1.17 TSO storage pools: distribution of ... to Memory 11 5. Two Levels of Cache 25 2. HIERARCHICAL REUSE DAEMON 35 1. Desired Behavior 35 2. Definition of the Synthetic Application 37 3. Analysis of the Syn...

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... portion of a burst, spread throughout the window. The characteristic burst time, and the corresponding number of requests, could then be identified by the transition between these two patterns of ... Persistent Data Access 93 Figure 7.6. Active file storage as a function ofwindow size. Figure 7.7. Persistent track images as a function ofwindow size. 90 THE FRACTAL STRUC...

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... and Comparison of VM DASD Workloads at THE FRACTAL STRUCTURE OF DATA REFERENCE Eleven Installations,” CMG Proceedings pp. 306 - 318, Dec. 1989. [14] J.D.C. Little, “A proof of the queueing formula: ... about the results of the deployable applications model. The usable capacity is the level of capacity use at which a disk’s I/O capability is exhausted. For a n...

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... THE FRACTAL STRUCTURE OF DATA REFERENCE Applications to the Memory Hierarchy by Bruce McNutt International Business Machines ... SYSTEMS, Nabil R. A dam, Aryya Gangopadhyay ISBN : 0 - 7923 - 9924 - 2 THE FRACTAL STRUCTURE OF DATA REFERENCE Applications to the Memory Hierarchy eBook ISBN: 0-306-47034-9 Print ISBN: 0-792-37945-4 ©2002 ... LOGIC IN DATA MODELING,...

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... exploit them to best advantage. The emphasis of the book will be on the practical applications of such results. The focus of the applications examined in this book is on the portion of a computer ... recall. THE FRACTAL STRUCTURE OF DATA REFERENCE Preface xvii The primary audience intended for the book is the large body of workers who endeavor to en...

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... percent of the tracks. Since the beginning of the sorted list represents the best possible cache contents, we may apply the definition of Ω(l) to obtain the following upper bound on the hit ... 3 the LRU list, other than the requested track, remain linked together in the same order as before. This algorithm has the net effect that the tracks in the list alwa...

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... widely separated from any other reference to the data. If we now examine the structure of database software, in an effort to account for data reuse at a variety of time scales, we find that ... use of a given track to the next reuse. Then we define the hierarchical reuse model of arrivals to the track as the hypothesis that the conditional distribution of th...

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... size. Then we may conclude that the population of tracks currently visiting the cache is given by (1.13): THE FRACTAL STRUCTURE OF DATA REFERENCE Therefore, By contrast, measurements of the ... Let the average duration of the front end be called ∆τ. Thus, the total average duration of the visit as a whole is given by (1.7) Suppose, now, that the cumulative...

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... convincingly by Smith [ 16]. 16 THE FRACTAL STRUCTURE OF DATA REFERENCE But assuming that the placement of interval boundaries falls at random, the average number of interval boundaries crossed ... n tch . We may then estimate To apply the conclusion just stated as a method of trace analysis, we count (1.17) Note that if 6’ is in the general ballpark of the gu...

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