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Author Shedler, G. S. ♦ Oden, P. H.
Source ACM Digital Library
Content type Text
Publisher Association for Computing Machinery (ACM)
File Format PDF
Language English
Subject Keyword Demand paging ♦ Memory management ♦ Paging machines ♦ Memory contention ♦ Operating systems studies ♦ Queueing analysis
Abstract This paper is concerned with certain aspects of contention for main memory resources in a multiprogrammed computer system operating under demand paging. In the model presented, the number of page-frames of main memory allocated to a problem program varies in time. These changes in memory configuration are represented explicitly in the model, CPU requirements and page exception characteristics of program material being described statistically. Expressions for the distribution of the number of page-frames allocated to an executing program, the long run expected fraction of a program's execution time in a given number of page-frames, and the average execution interval of the multi-programmed load are obtained. It is pointed out heuristically and demonstrated numerically that an increase is obtainable in the average execution interval of the multiprogrammed load over that resulting from equal fixed partitioning of main memory.
Description Affiliation: IBM San Jose Research Lab, San Jose, CA (Shedler, G. S.) || IBM Thomas J. Watson Research Center, Yorktown Heights, NY (Oden, P. H.)
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2005-08-01
Publisher Place New York
Journal Communications of the ACM (CACM)
Volume Number 15
Issue Number 8
Page Count 11
Starting Page 761
Ending Page 771


Source: ACM Digital Library