On a system using a disk cache, the mean access time is dependent on the mean cache access time, the mean disk access and the hitrate. For the following: Cache : 1 ms; Disk: 100 ms; Hit rate: 25%, what is mean access time?

On a system using a disk cache, the mean access time is dependent on the mean cache access time, the mean disk access and the hitrate. For the following: Cache : 1 ms; Disk: 100 ms; Hit rate: 25%, what is mean access time?

Operations Research : Applications and Algorithms

4th Edition

ISBN:9780534380588

Author:Wayne L. Winston

Publisher:Wayne L. Winston

Chapter20: Queuing Theory

Section20.10: Exponential Queues In Series And Open Queuing Networks

Problem 11P

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Concept explainers

Parallel and Distributed Storage

A parallel storage file system is a sort of clustered file system. A clustered file system is a storage system shared by multiple devices simultaneously.

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On a system using a disk cache, the mean access time is dependent on the mean cache access time, the mean disk access and the hitrate. For the following:

Cache : 1 ms; Disk: 100 ms; Hit rate: 25%, what is mean access time?

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