基于服务的两级协同分布式调度策略  

A Two-Level Cooperation Distributed Scheduling Algorithm Based on Services

作　　者：张小松[1] 刘丹[1] 李毅超[1] 

机构地区：[1]电子科技大学计算机科学与工程学院,成都610054

出　　处：《电子科技大学学报》2005年第2期210-212,232,共4页Journal of University of Electronic Science and Technology of China

基　　金：四川省科技攻关资助项目(02GG006)

摘　　要：提出一种全局及局部两级协同调度算法。全局调度以具体服务状态和系统状态为决策依据选择服务节点,提高调度精度;局部调度在全局调度基础上,调整服务质量和服务状态以确保零拒绝率,并回馈服务状态以提高全局调度的正确性。理论分析和仿真结果表明该算法在保持同等效率前提下,获得比传统调度算法更高的可靠性。A global and local two-level cooperation scheduling (TCS) algorithm is presented. In order to improve the scheduling precision, the global scheduling considers both the service states and system states to choose a suitable site to serve; Based on the global scheduling, the local scheduling adjusts the service quality and service states to guarantee no rejection of client request, and feeds back the service states to improve the correctness of global scheduling. The theoretical and simulated results show that, with the similar efficiency, the proposed algorithm owns higher reliability compared with the traditional distributed scheduling algorithms.

关 键 词：分布式调度 可靠性 服务状态 系统状态 

分 类 号：TP316.4[自动化与计算机技术—计算机软件与理论]