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MICOS: A microprogrammed hierarchical operating system nucleus and its performance comparison

Published:19 November 1978Publication History
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Abstract

Modern operating systems (OS) spend often more than half of the total CPU-time for overhead. Microprogramming of systems components offers an attractive means for a reduction. However, previous investigators have found only small increases in efficiency by microprogrammed OS-functions, whenever analyzed in detail. They have implemented a total OS in microcode or designed new powerful machine instructions for single systems functions, but without important changes to the hardware architecture or the OS-structure.

A special structure of the present system has been adopted for the comparison of the performance of the different implementation modes for the functions in the OS-nucleus.

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  1. MICOS: A microprogrammed hierarchical operating system nucleus and its performance comparison

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          • Published in

            cover image ACM SIGMICRO Newsletter
            ACM SIGMICRO Newsletter  Volume 9, Issue 4
            Dec. 1978
            160 pages
            ISSN:1050-916X
            DOI:10.1145/1014198
            Issue’s Table of Contents

            Copyright © 1978 Authors

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            Association for Computing Machinery

            New York, NY, United States

            Publication History

            • Published: 19 November 1978

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