云计算环境下基于信任主体和效益值的动态任务调度算法研究
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摘要
云计算环境下信任机制对任务调度过程中的内在机理研究还不够深入,导致任务完成率受信任主体的效益值影响较大。为了探索信任效益值与任务调度的关系,提出了一种动态信任效益任务调度算法。该算法采用信任效益函数量化不同信任关系下调度结果对任务完成时间与完成率的影响。仿真实验结果显示该算法在任务完成时间、任务完成率、信任效益值等多个性能方面均优于其他传统的任务调度算法。
The internal mechanism of the trust mechanism in task scheduling is not deep enough in Cloud computing environment,which leads to the efficiency of the task completion rate is greatly affected by the benefit value of the trust mechanism. In order to explore the relationship between trust benefit value and task scheduling,a dynamic trust benefit task scheduling algorithm is proposed. The proposed algorithm uses the trust benefit function to quantify the effect of scheduling results on task completion time and completion rate under different trust relationships.The simulation results show that the proposed algorithm is superior to the other traditional task scheduling algorithms in completion time,task completion rate,and the trust benefit value.
The internal mechanism of the trust mechanism in task scheduling is not deep enough in Cloud computing environment,which leads to the efficiency of the task completion rate is greatly affected by the benefit value of the trust mechanism. In order to explore the relationship between trust benefit value and task scheduling,a dynamic trust benefit task scheduling algorithm is proposed. The proposed algorithm uses the trust benefit function to quantify the effect of scheduling results on task completion time and completion rate under different trust relationships.The simulation results show that the proposed algorithm is superior to the other traditional task scheduling algorithms in completion time,task completion rate,and the trust benefit value.
引文
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[3]HU CHUNHUA,CHEN XIAOHONG,WU MIN,et al.A service trust negotiation and access control strategy based on SLA in cloud computing[J].Science in China Series E-information Sciences,2012,42(3):314-332.
[4]马华,胡志刚,张红宇.云计算中服务可信度评价的个性化融合方法[J].小型微型计算机系统,2014,35(4):776-780.
[5]LI X,DU J.Adaptive and attribute based trust model for service level agreement guarantee in cloud computing[J].IETInformation Security,2013,7(1):39-50.
[6]金瑜,王凡,赵红武,等.云计算环境下信任机制综述[J].小型微型计算机系统,2016,37(1):1-11.
[7]吴慧,于炯,于斐然.云计算环境下基于信任模型的动态级访问控制[J].计算机工程与应用,2012,48(23):102-106.
[8]李峰,申利民,司亚利,等.基于交互感知的动态自适应的信任评估模型[J].通信学报,2012,33(10):60-70.
[9]谢晓兰,刘亮,赵鹏.面向云计算基于双层激励和欺骗检测的信任模型[J].电子与信息学报,2012,34(4):812-817.
[10]方恩光,吴卿.基于证据理论的云计算信任模型研究[J].计算机应用与软件,2012,29(4):68-70.
[11]龙军,刘昕民,袁鑫攀,等.一种基于信任推理与演化的Web服务组合策略[J].计算机学报,2012,35(2):2298-2314.
[12]王霞俊.Cloud Sim云计算仿真工具研究及应用[J].微型电脑应用,2013,29(8):59-61.