Some Mathematical Considerations of Time-Sharing Scheduling Algorithms
Journal of the ACM (JACM)
Probability Models for Multiprogramming Computer Systems
Journal of the ACM (JACM)
Feedback Queueing Models for Time-Shared Systems
Journal of the ACM (JACM)
Some criteria for time-sharing system performance
Communications of the ACM
Resource management for a medium scale time-sharing operating system
Communications of the ACM
Operating Systems: A statistical model for console behavior in multiuser computers
Communications of the ACM
AN ANALYSIS OF TIME-SHARED COMPUTER SYSTEMS
AN ANALYSIS OF TIME-SHARED COMPUTER SYSTEMS
A tandem queueing model of a time-sharing computing system
ACM '72 Proceedings of the ACM annual conference - Volume 2
Analysis of retrieval performance for selected file organization techniques
AFIPS '70 (Fall) Proceedings of the November 17-19, 1970, fall joint computer conference
Quantitative evaluation of file management performance improvements
AFIPS '73 Proceedings of the June 4-8, 1973, national computer conference and exposition
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An approach is presented to analyzing and controlling hardware and software configurations of a time-sharing system given its load characteristics and desired performance. A mathematical model is developed which predicts response time to both interactive terminal requests and to compute bound programs. Estimates are obtained which relate performance to CPU load, file I/O load, and swap I/O load. Instrumentation contained within the UTS time-sharing system measures actual load and actual response during system operation, These measures suggest standards by which both load and response of time-shared systems could be compared, Extrapolation of the modeled and measured results allows prediction of performance for a variety of hardware configurations and user loads. Administrative controls allow dynamic tuning of the system during actual operation utilizing displays of current performance.