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Journal of Korean Society for Quality Management 2011;39(3): 412-. |
| 처리시간을 고려한 분산시스템의 서비스 품질분석 |
| 김정호1, 박종훈2 |
1국방기술품질원
2대구가톨릭대학교 경영학과 |
| QoS Analysis of a Distributed System Considering the Processing Time |
| Jung-Ho Kim1, Jong-Hun Park2 |
1Defense Agency for Technology and Quality
2Department of Business Adminstration, Catholic University of Daegu |
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| ABSTRACT |
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In this paper, we introduce Quality of Service(QoS) analytic model of a distributed system that decentralizes the process nodes performing each task and communicates through a network for cooperation. The model advances a service reliability model of Dai et a1.(2003) by means of considering the processing time. The service is assumed to be provided by a centralized heterogeneous distributed system which is composed of some subsystems managed by a control center. The QoS is defined as the probability that a service is provided successfully in an allowed time, we consider the hardware/software reliability and the processing time which include program execution time, data transfer time. We derive the processing time distribution for a required service through convolution of corresponding probability density function. An application example is used to explain the procedure of computing quality of service. |
| Key Words:
Distributed System;Quality of Service;Processing Time; |
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