Journal of the Korea Society for Simulation (한국시뮬레이션학회논문지)
- Volume 2 Issue 1
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- Pages.13-22
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- 1993
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- 1225-5904(pISSN)
Performance Analysis of Bus Arbitration Schemes for Multiple-bus Multiprocessor System
다중버스 다중프로세서 시스템을 위한 버스 중재 방식의 성능 분석
Abstract
In a multiple-bus multiprocessor system in which processors and memory modulus are interconnected through system buses, time delay due to bus contention degrades system performance. In order to reduce such a problem , and optimal bus arbitration scheme and its hardware are neccessary. In this study, performaces of four arbitration schemes are analyzed and compared : fixed-priority, equal-priority, rotating-priority and round-robin priority schemes. For the study, the software simulator of a multiple-bus multiprocessor system is developed by using SLAM II. Simulation results show that, when memory sccesses are evenly distributed to all memory modulus, round-robin priority scheme provides the best performance. But when a hot spot exists, the use of the fixed priority scheme results in the shortest access time.
Keywords