| 1/2002 - 3 |
Adaptive Scheduling of Tasks in the Conditions of System OverloadOleg BREKHOV, Dmitry BABAK |
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Author keywords
adaptivity, scheduling, overload
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About this article
Date of Publication: 2002-04-02
Volume 2, Issue 1, Year 2002, On page(s): 16 - 22
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: Not assigned
Abstract
The growing volume and complexity of operating systems dictate the necessity of new approaches to the problem of task planning in real time operating systems. These approaches are implemented on the basis of adaptive mechanisms of quality change, registering of stochastic character of task parameters, application of scheduling schemes with feedback. This work proposes an online minimization algorithm of task results in real time operating systems possessing adaptive qualities to changes of task quantity, amount of processor load, and distribution of time value of task implementation. The algorithm functions as superstructure to EDF [1] algorithm and clocks in only at overload regime, when processor load becomes higher than 1. The article also provides algorithm realization as a superstructure over basic scheduling means RTOS VxWorks. |
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
All rights reserved: Advances in Electrical and Computer Engineering is a registered trademark of the Stefan cel Mare University of Suceava. No part of this publication may be reproduced, stored in a retrieval system, photocopied, recorded or archived, without the written permission from the Editor. When authors submit their papers for publication, they agree that the copyright for their article be transferred to the Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University of Suceava, Romania, if and only if the articles are accepted for publication. The copyright covers the exclusive rights to reproduce and distribute the article, including reprints and translations.
Permission for other use: The copyright owner's consent does not extend to copying for general distribution, for promotion, for creating new works, or for resale. Specific written permission must be obtained from the Editor for such copying. Direct linking to files hosted on this website is strictly prohibited.
Disclaimer: Whilst every effort is made by the publishers and editorial board to see that no inaccurate or misleading data, opinions or statements appear in this journal, they wish to make it clear that all information and opinions formulated in the articles, as well as linguistic accuracy, are the sole responsibility of the author.
