A model for a university timesharing computer
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The Carleton University Honeywell Level 66 computer system has been modelled by a closed queueing network consisting of a central CPU with disks and front end processors as the input-output devices. Terminal input proceeds through a front end processor. Data gathered from the system was used to find the mean device service times and the inter-device branching ratios, the parameters required to evaluate the system models. The models represent the system behaviour quite well. A comparison between the Honeywell system and the University's older Xerox system indicates that the two systems are roughly equivalent with the Xerox system having an advantage in the number of online users which may be supported for a reasonable response time. The models suggest that the CPU is the bottleneck and that a dual CPU or faster CPU would cause a considerable improvement.
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This work is available on request. You can request a copy at https://library.carleton.ca/forms/request-pdf-copy-thesis
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Copyright © 1982 the author(s). Theses may be used for non-commercial research, educational, or related academic purposes only. Such uses include personal study, research, scholarship, and teaching. Theses may only be shared by linking to Carleton University Institutional Repository and no part may be used without proper attribution to the author. No part may be used for commercial purposes directly or indirectly via a for-profit platform; no adaptation or derivative works are permitted without consent from the copyright owner.
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- 1982
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