Dynamic Thread Assignment with Fuzzy Control for Java Virtual Machine on Asymmetric Multicore Systems

• Main Authors: Chiu, Hsiao-Hui, 邱筱惠
• Other Authors: Yang, Wuu
• Format: Others
• Language: en_US
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/87679424318509301016

碩士 === 國立交通大學 === 網路工程研究所 === 100 === Asymmetric multicore processors have been proposed as a better trade-off between performance and power consumption over symmetric multicore processors. They also reveal challenges in mapping threads to cores. We propose a new scheduler based on fuzzy control theory. In this work, we configure an asymmetric multicore system in which cores share the same ISA but run at different frequencies. Our fuzzy scheduler decides thread-to-core assignment based on periodical run-time performance characteristics. Evaluation results demonstrate that our fuzzy scheduler saves significant energy and achieves better energy-delay product for memory-intensive programs while sacrificing performance slightly.