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Paper Abstract and Keywords
Presentation 2021-03-25 11:40
Scheduling algorithms for sporadic and periodic tasks in multiprocessors
Yuki Mori, Nobuyuki Yamasaki (Keio Univ.) CPSY2020-54 DC2020-84
Abstract (in Japanese) (See Japanese page) 
(in English) Among embedded systems that are embedded in devices to ealize specific functions, systems that need to meet time onstraints such as deadlines to cycles are called embedded real-time systems. In an embedded real-time system, there are many important processes for periodic tasks, so it is necessary to keep time constraintsand keep the movement of tasks between processors small. On the other hand, embedded systems also have tasks that occur aperiodically. Many aperiodic tasks do not have deadlines, but they should be executed as soon as possible to the extent that the time constraints of periodic tasks are guaranteed. An algorithm that determines the priority of executing a task while satisfying such a equirement is called a real-time scheduling algorithm. Inrecent real-time systems, there is an increasing demand for achieving high performance by multiprocessors as the scale of data handled increases. Along with this, real-time scheduling algorithms for multiprocessors have become important. In this research, we propose an algorithm that efficiently executes aperiodic tasks on a multiprocessor while keeping the deadline of periodic tasks. Results of evaluations by simulations showed that our algorithm can process nonperiodic tasks while suppressing the number of periodic task migrations.
Keyword (in Japanese) (See Japanese page) 
(in English) Embedded System / Real-tim System / Embedded Real-time Scheduling / Sporadic Tasks / Multiprocessing System / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 435, CPSY2020-54, pp. 25-30, March 2021.
Paper # CPSY2020-54 
Date of Issue 2021-03-18 (CPSY, DC) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF CPSY2020-54 DC2020-84

Conference Information
Conference Date 2021-03-25 - 2021-03-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) ETNET2021 
Paper Information
Registration To CPSY 
Conference Code 2021-03-CPSY-DC-SLDM-EMB-ARC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Scheduling algorithms for sporadic and periodic tasks in multiprocessors 
Sub Title (in English)  
Keyword(1) Embedded System  
Keyword(2) Real-tim System  
Keyword(3) Embedded Real-time Scheduling  
Keyword(4) Sporadic Tasks  
Keyword(5) Multiprocessing System  
1st Author's Name Yuki Mori  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Nobuyuki Yamasaki  
2nd Author's Affiliation Keio University (Keio Univ.)
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Date Time 2021-03-25 11:40:00 
Presentation Time 20 
Registration for CPSY 
Paper # IEICE-CPSY2020-54,IEICE-DC2020-84 
Volume (vol) IEICE-120 
Number (no) no.435(CPSY), no.436(DC) 
Page pp.25-30 
#Pages IEICE-6 
Date of Issue IEICE-CPSY-2021-03-18,IEICE-DC-2021-03-18 

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