Download or read book Analysis of a Continuum of Processor sharing Models for Time shared Computer Systems written by Jiunn Hsu and published by . This book was released on 1971 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: Processor-sharing models of time-shared computer systems are defined and some new results are presented. The major emphasis of this research is on the modeling and analysis of new models of time-shared computer systems and on the finding of some fundamental properties which apply to the average number of customers in the system and the average response time functions for a large class of time-shared computer systems. The family of selfish scheduling algorithms is defined and the Laplace transform of the response time functions are obtained. A family of scheduling algorithms whose performance ranges between that of the RR system and the FB system is constructed. A simple relationship between the time-dependent average number of customers in the system and the average response time functions for a large class of M/M/1 systems is formulated. Finally, some fundamental properties are established which apply to the average response time functions for all time-shared computer systems. (Author).
Download or read book An Analysis of Time shared Computer Systems written by Allan Lee Scherr and published by . This book was released on 1967 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analysis of time-shared computer systems based on the use of simulation and mathematical models.
Download or read book NRL Report written by and published by . This book was released on 1975 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computer communication Networks written by Norman Abramson and published by . This book was released on 1973 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: Planning computer - communication networks; System design for computer networks; Optimal file allocation in a computer network; Scheduling, queueing, and delays in time-shared systems and computer networks; Common-carrier data communication; Interfacing and data concentration; Asynchronous time-division multiplexing systems; Multiple-access communications for computer nets; Regulatory policy and future date-transmission services; Economic considerations in computer-communication systems; The dartmounth time sharing network; Exploratory research on netting at IBM; The ARPA network.
Download or read book Summary written by University of California, Los Angeles. Dept. of Engineering and published by . This book was released on 1972 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by and published by . This book was released on 1972 with total page 646 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book SIAM Journal on Computing written by Society for Industrial and Applied Mathematics and published by . This book was released on 1974 with total page 1008 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contains research articles in the application of mathematics to the problems of computer science and the nonnumerical aspects of computing.
Download or read book System Resource Management in a Time Sharing Environment written by Manfred Ruschitzka and published by . This book was released on 1973 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Queueing Systems Volume 2 written by Leonard Kleinrock and published by Wiley-Interscience. This book was released on 1976 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: Queueing Systems Volume 1: Theory Leonard Kleinrock This book presents and develops methods from queueing theory in sufficient depth so that students and professionals may apply these methods to many modern engineering problems, as well as conduct creative research in the field. It provides a long-needed alternative both to highly mathematical texts and to those which are simplistic or limited in approach. Written in mathematical language, it avoids the "theorem-proof" technique: instead, it guides the reader through a step-by-step, intuitively motivated yet precise development leading to a natural discovery of results. Queueing Systems, Volume I covers material ranging from a refresher on transform and probability theory through the treatment of advanced queueing systems. It is divided into four sections: 1) preliminaries; 2) elementary queueing theory; 3) intermediate queueing theory; and 4) advanced material. Important features of Queueing Systems, Volume 1: Theory include- * techniques of duality, collective marks * queueing networks * complete appendix on z-transforms and Laplace transforms * an entire appendix on probability theory, providing the notation and main results needed throughout the text * definition and use of a new and convenient graphical notation for describing the arrival and departure of customers to a queueing system * a Venn diagram classification of many common stochastic processes 1975 (0 471-49110-1) 417 pp. Fundamentals of Queueing Theory Second Edition Donald Gross and Carl M. Harris This graduated, meticulous look at queueing fundamentals developed from the authors' lecture notes presents all aspects of the methodology-including Simple Markovian birth-death queueing models; advanced Markovian models; networks, series, and cyclic queues; models with general arrival or service patterns; bounds, approximations, and numerical techniques; and simulation-in a style suitable to courses of study of widely varying depth and duration. This Second Edition features new expansions and abridgements which enhance pedagogical use: new material on numerical solution techniques for both steady-state and transient solutions; changes in simulation language and new results in statistical analysis; and more. Complete with a solutions manual, here is a comprehensive, rigorous introduction to the basics of the discipline. 1985 (0 471-89067-7) 640 pp.
Download or read book The Analysis of General Purpose Computer Time sharing Systems written by Norman R. Nielsen and published by . This book was released on 1966 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Doctoral Dissertations written by and published by . This book was released on 1970 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Index written by and published by . This book was released on 1972 with total page 1088 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements written by and published by . This book was released on 1972 with total page 1060 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling Restricted Processor Sharing in a Computer System with Non exponential Service Times written by Feng Zhang and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A computer system often has to handle computational jobs with highly varying CPU service time requirements. In principle, unrestricted processor sharing can be useful in handling such demands. In practice, it must be implemented by round-robin, and there is an overhead cost (e.g., cache thrashing and operating system management of job switching) to implementing this scheme. Furthermore, significant main-memory thrashing (i.e., increased paging activities) may occur with many jobs inside the system. To bound the cache thrashing overhead, the number of jobs actively sharing the processors has to be restricted. This is essentially restricted processor sharing. Similarly, to bound the main-memory thrashing overhead, the total number of jobs granted access to the system at any time has to be restricted as well. Because of these population size constraints, the existing analytical results for Jackson networks do not apply here. The goal of this research, therefore, is to develop analytical models for systems under the above mentioned constraints and the impact of memory thrashing overhead. First, by ignoring peripherals and paging activities, we present an analytical model for CPU subsystems with arbitrary service time distributions. In the model, the cache thrashing overhead is considered by assuming a certain portion of CPU power being wasted. Using this model, we demonstrate that restricted processor sharing, which avoids significant cache thrashing, is effective in handling highly varying jobs demands (i.e., C2v 1). Based on this baseline model, we then develop models for systems with a data disk and/or paging activities. By applying the models, we study the interplay among the parameters such as the CPU service time distribution, the number of processors, and the degree of processor sharing to analyze the performance of different computer system configurations in terms of mean system time (or response time) and maximum throughput. We show that different configurations can have quite different maximum throughput values. Furthermore, we find that, given highly varying job demands, the system performance may get improved with some amount of paging activities. While we assume open systems (with dynamic arrivals) in this work, the models can also be applied to study time-sharing systems and draining systems (with static arrivals).
Download or read book Network Models for Large Scale Time Sharing Systems written by Charles G. Moore III and published by . This book was released on 1971 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scheduling Computer Operations written by Vinod K. Sahney and published by . This book was released on 1972 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Processor Shared Time Sharing Models in Heavy Traffic written by D. P. Gaver and published by . This book was released on 1985 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: Processor sharing (PS) is a mathematically tractable approximation to time sharing, a procedure followed in many actual computer systems. In effect, PS assigns to each job of the i, (i = 1,2, ...) present for processing 1/ith of the total processing effort; equivalently, a single job with Markovian service rate micron completes processing in (t, t+dt) with probability (micron/i)dt + o (dt). One advantage of PS is that short jobs are not trapped behind long jobs, as is possible in a FC-FS discipline. In this document probability models are presented for computer systems with processorshared(time sliced) service discipline. The response (sojourn) time of an arriving job that requires T units of processing time is shown to be approximately Gaussian/normal under moderately heavy traffic conditions, e.g. when the number of terminals becomes large. Keywords: Tables(data).
