Answered: How can processor execution time be…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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How can processor execution time be reduced?

I found one way to reduce execution time: by reducing the number of clock cycles. However, I am not sure if increasing the clock rate would also be another way of reducing processor execution time. I need help clarifying this.

Expert Solution

Step 1

The formula for Execution Time in terms of clock rate is given below:

$E x e c u t i o n T i m e = \frac{N o . o f I n s t r u c t i o n s * C P I}{C l o c k R a t e}$ ,

where CPI is the cycles per instruction.

The formula for Clock Rate is:

$C l o c k R a t e = \frac{1}{C l o c k C y c l e T i m e}$

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