A Queueing Model of Priority Multiprogramming
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 Emeritus Professor Isi Mitrani




Author(s)   Mitrani I 
Publication type   Report 
Series Title   Computing Laboratory Technical Report Series 
Year   1972 
Legacy Date   1972 
Report Number   41 
Pages   25 



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A stochastic model of a priority multiprogramming computing system is analysed in the steady state. A version of the model in which preemption of input/output operations is allowed and one in which it is not allowed and considered. Expressions for the central processor utilisation factor and for the average residenceinthesystem times are obtained. The relative merits of the two types of systems and the problem of efficient allocation of priorities to jons with different CPU and I/O requirements are discussed, using the results for some special cases as illustration. 



Institution   Computing Laboratory, University of Newcastle upon Tyne 
Place Published   Newcastle upon Tyne 
URL   http://www.cs.ncl.ac.uk/publications/trs/papers/41.pdf 
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