COMPUTER SYSTEMS&MOD MSGT/ET SA AC PKG
3rd Edition
ISBN: 9780134671123
Author: Bryant
Publisher: PEARSON
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Chapter 1.9, Problem 1.2PP
Program Plan Intro
Amdahl’s Law:
- It denotes an observation on effectiveness of performance improving of a system part.
- The main idea is that when one system part is been speed up the effect on overall system would depend on significance and speed up of the part.
- Suppose the execution of an application needs “Told” time.
- Some part of system may require a fraction “α” of this time and the performance is improved by a factor of “k”.
- The overall execution time will be “
- The speed up can be computed as “
- Hence, the expression for speed up is “
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