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IBM Systems Journal

Issue 4 • Date 1975

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Displaying Results 1 - 9 of 9
  • Preface

    Publication Year: 1975 , Page(s): 313
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (397 KB)  

    The theme of our previous issue, installation management techniques, is continued in this issue in the first three papers described below. View full abstract»

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  • Computer installation accounting

    Publication Year: 1975 , Page(s): 314 - 339
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (1994 KB)  

    Administering the allocation of a computer resource can be segmented into several responsibilities, with fairly well defined subjects of common concern: the policy of the parent organization and strategies to realize the overall objectives by allocating computer resources and assessing results; tactics of users to maximize value per unit price; control functions to demonstrate compliance with externally imposed regulations; planning and assessment within the computer facility; and technology of load measurement. It is possible to design an installation accounting package that does much to decouple these varied functions. We have described an implementation that is quite successful in this regard. View full abstract»

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  • Evaluating system changes under uncontrolled workloads: a case study

    Publication Year: 1975 , Page(s): 340 - 352
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (1488 KB)  

    The results indicate that the 2 – 7 system condition gives a statistically poorer system reaction time than the other system conditions. However, the amounto f performance degradation was not deemed serious by management. View full abstract»

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  • Testing in a complex systems environment

    Publication Year: 1975 , Page(s): 353 - 365
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (1481 KB)  

    With a thorough understanding of the various types of testing, of the objectives or purposes of specific tests, and of the test tools and test methodology, it is feasible to conduct meaningful tests in a complex systems environment. The major test tools are the test driver itself, the test libraries, the ability to edit or modify tests, and the post-test analysis programs. By utilizing these testools and the methodology shown, both functional and performance tests can be conducted. The combination of tools and methods can accelerate program development, aid migration, ensure that accuracy and performancge oals are met, and reduce costs by the replacement of manual methods with the automated testing techniques described. View full abstract»

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  • Performance analysis of virtual memory time-sharing systems

    Publication Year: 1975 , Page(s): 366 - 384
    Cited by:  Papers (1)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (1915 KB)  

    In this paper, we have dealt with some aspects of system performance, but we have left many questions unanswered. The analyses we have described will tell us, hopefully, whether the system is saturated and which components are at fault, but further analysis will be required to determine exactly how much additional capacity is needed to achieve a desired performance level. View full abstract»

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  • Structured programming for virtual storage systems

    Publication Year: 1975 , Page(s): 385 - 406
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (1750 KB)  

    The concepts and techniques of virtual storage programming and those of structured programming have grown along diverse j paths. Virtual storage programming has evolved largely by looking retrospectively at programs designed and coded by means other than structured programming, and thus has included techniques that are not applicable to structured programming. Structured programming has evolved with little regard to virtual storage, and thus includes techniques alien to virtual storage systems. View full abstract»

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  • Authors

    Publication Year: 1975 , Page(s): 407 - 408
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    Freely Available from IEEE
  • Abstracts

    Publication Year: 1975 , Page(s): 409 - 410
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    Freely Available from IEEE
  • Contents of Volume 14, 1975

    Publication Year: 1975 , Page(s): 411
    Save to Project icon | PDF file iconPDF (833 KB)  
    Freely Available from IEEE

Aims & Scope

Throughout its history, the IBM Systems Journal has been devoted to software, software systems, and services, focusing on concepts, architectures, and the uses of software.

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Meet Our Editors

Editor-in-Chief
John J. Ritsko
IBM T. J. Watson Research Center5