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Paper Abstract and Keywords
Presentation 2012-05-25 17:20
A Note on Software Performability Evaluation with Systemability
Koichi Tokuno, Shigeru Yamada (Tottori Univ.) R2012-10
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we discuss the performability evaluation model for the software-based system, introducing the concept of systemability which is defined as the reliability characteristic subject to the uncertainty of the field environment. Assuming that the software system can process the multiple tasks simultaneously and that the arrival process of the tasks follows a nonhomogeneous Poisson process, we analyze the distribution of the number of tasks whose processes can be completed within the processing time limit with the infinite-server queueing theory. Here we take the position that the software reliability characteristic in the testing phase is originally different from that in the operation phase. Then, the software failure-occurrence phenomenon in the operation phase is described with the Markovian software reliability model with systemability, i.e., we consider the randomness of the environmental factor which is introduced to bridge the gap between the software failure-occurrence characteristics during the testing and the operation phases. We derive several software performability measures considering the real-time property; these are given as the functions of time and the number of debugging activities. Finally, we illustrate several numerical examples of the measures to investigate the impact of consideration of systemability on the system performability evaluation.
Keyword (in Japanese) (See Japanese page) 
(in English) performability evaluation / systemability / randomness of field environment / Markovian software reliability model / infinite-server queueing model / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 59, R2012-10, pp. 53-58, May 2012.
Paper # R2012-10 
Date of Issue 2012-05-18 (R) 
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)
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Conference Information
Committee R  
Conference Date 2012-05-25 - 2012-05-25 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) Softwar Reliability, etc. 
Paper Information
Registration To R 
Conference Code 2012-05-R 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Note on Software Performability Evaluation with Systemability 
Sub Title (in English)  
Keyword(1) performability evaluation  
Keyword(2) systemability  
Keyword(3) randomness of field environment  
Keyword(4) Markovian software reliability model  
Keyword(5) infinite-server queueing model  
1st Author's Name Koichi Tokuno  
1st Author's Affiliation Tottori University (Tottori Univ.)
2nd Author's Name Shigeru Yamada  
2nd Author's Affiliation Tottori University (Tottori Univ.)
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Speaker Author-1 
Date Time 2012-05-25 17:20:00 
Presentation Time 25 minutes 
Registration for R 
Paper # R2012-10 
Volume (vol) vol.112 
Number (no) no.59 
Page pp.53-58 
Date of Issue 2012-05-18 (R) 

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