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Performance by Design: Computer Capacity Planning by Example by Daniel A. Menascé, Lawrence W. Dowdy, Virgilio A.F. Almeida

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Chapter 5. Case Study I: A Database Service

Introduction

The remaining chapters of Part I present several case studies aimed at demonstrating important techniques used in performance analysis and capacity planning. Each case study has specific learning objectives. For example, in this chapter, a database service example is used to describe how service demands are obtained from different types of measurements and how a model is constructed and used to answer several “what-if” questions. (What if an extra disk is purchased? How much it improves user response time? Would adding a second processor be more cost effective?) The data, computations, and graphs presented in this chapter are easily generated from the provided MS Excel workbooks: DBServiceExample.xls ...

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