A workload model and measures for computer performance evaluation

Front Cover
National Aeronautics and Space Administration, 1972 - Reference - 26 pages
0 Reviews
A generalized workload definition is presented which constructs measurable workloads of unit size from workload elements, called elementary processes. An elementary process makes almost exclusive use of one of the processors, CPU, I/O processor, etc., and is measured by the cost of its execution. Various kinds of user programs can be simulated by quantitative composition of elementary processes into a type. The character of the type is defined by the weights of its elementary processes and its structure by the amount and sequence of transitions between its elementary processes. A set of types is batched to a mix. Mixes of identical cost are considered as equivalent amounts of workload. These formalized descriptions of workloads allow investigators to compare the results of different studies quantitatively. Since workloads of different composition are assigned a unit of cost, these descriptions enable determination of cost effectiveness of different workloads on a machine. Subsequently performance parameters such as throughput rate, gain factor, internal and external delay factors are defined and used to demonstrate the effects of various workload attributes on the performance of a selected large scale computer system.

From inside the book

What people are saying - Write a review

We haven't found any reviews in the usual places.

Related books

Contents

INTRODUCTION
1
DEFINITION OF PERFORMANCE AND EFFICIENCY MEASURES
15
APPLICATIONS
21

Common terms and phrases

Bibliographic information