A simulation study of the time-sharing computer system at the Naval Postgraduate School
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Authors
Goodman, Ronald Maxwell
Pivonka, Leo Michael
Subjects
Computer simulation
Time-sharing
Spectral analysis
Time-sharing
Spectral analysis
Advisors
Heidorn, George W.
Date of Issue
1969-06
Date
June 1969
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
A GPSS model of the CP/CMS time-sharing computer system at the Naval Postgraduate School was constructed, and was used in three experiments to investigate the performance of the system under a variety of conditions. In each of the experiments the model generated auto-correlated sequences of observations which were analyzed using techniques adapted from spectral analysis. An experiment to determine the effect of an increased number of terminals on average response time revealed that the system adequately could support a 25% increase in the number of terminals, and
that the number of terminals was limited by the magnetic disk I/O capability.
In a second experiment it was found that increasing the number of disks from four to eight would enable the system to support up to 20 terminals. A final experiment involving the examination of a new scheduling algorithm showed no significant changes in average response times.
Type
Thesis
Description
Series/Report No
Department
Computer Science
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.