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《Journal of Zhejiang University(Engineering Science)》 2011-09
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Fair scheduling algorithm on multi-core platforms based platforms

LIU Jia-hai1,2,YANG Mao-lin2(1.Department of Information Science and Electronic Engineering,Zhejiang University City College,Hangzhou 310015,China;2.College of Software Technology,Zhejiang University,Ningbo 315103,China)  
A new cache-aware scheduling algorithm based on Pfair scheduling algorithm for soft real-time tasks on multi-core platforms was proposed to reduce the shared L2cache thrashing of global scheduling algorithm on multi-core processors.The task priority model of the proposed algorithm which was used in the extended Pfair scheduling algorithm was established by the work set size(WSS),the sub-task deadline,and the task utilization.The scheduling decision of the proposed algorithm is self-adaptive for WSS on heavy-loaded systems.Comparing with the traditional global-earliest deadline first(G-EDF) scheduling algorithm and the Pfair scheduling algorithm,the proposed algorithm can obtain lower task deadline miss rate and the L2-cache thrashing rate on the heavy-loaded multi-core processors.Consequently,the overall performance of the proposed algorithm is better than the other two scheduling algorithms.
【CateGory Index】: TP332
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1 GAO Feng, LIU Peng, YAO Qing-dong, LI Dong-xiao (Department of Information Science & Electronic Engineering, Zhejiang University, Hangzhou 310027, China);Design and Implementation of RTOS for a HDTV Integrated Source Decoding Chip[J];Journal of Circuits and Systems;2002-03
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