2021-09-23T02:55:56Zhttps://ipsj.ixsq.nii.ac.jp/ej/?action=repository_oaipmhoai:ipsj.ixsq.nii.ac.jp:000600892017-03-31T05:37:45Z05550:05552
On Performance Evaluation of Multiprogramming SystemsOn Performance Evaluation of Multiprogramming Systemsenghttp://id.nii.ac.jp/1001/00060089/Articlehttps://ipsj.ixsq.nii.ac.jp/ej/?action=repository_action_common_download&item_id=60089&item_no=1&attribute_id=1&file_no=1Copyright (c) 1976 by the Information Processing Society of JapanTohoku UniversityYamaguchi UniversityTohoku UniversityUniversity of Electro-CommunicationMasatoshi, MiyazakiShingo, TomitaShoichi, NoguchiJuro, OizumiFor performance evaluation of multiprogramming systems a queueing model with a finite waiting room is considered. The model assumes that a computer system consists of a central processor and identical input/output channels and that the service times of both units are exponentially distributed independent random variables. Then the queueing model is described as M/M/S (N) where S is number of input/output channels and N is degree of multiprogramming. Processor productivity is defined by a steady state probability. Compared with measured and calculated data of processor productivity the model validation is discussed. Furthermore an overhead of a monitor in multiprogramming systems is also considered.For performance evaluation of multiprogramming systems, a queueing model with a finite waiting room is considered. The model assumes that a computer system consists of a central processor and identical input/output channels, and that the service times of both units are exponentially distributed independent random variables. Then the queueing model is described as M/M/S (N) , where S is number of input/output channels and N is degree of multiprogramming. Processor productivity is defined by a steady state probability. Compared with measured and calculated data of processor productivity, the model validation is discussed. Furthermore, an overhead of a monitor in multiprogramming systems is also considered.AA00674393Information Processing in Japan16062661976-01-012009-06-30