摘要
研究了集群架构服务器的三种实时调度策略,即集中式策略、分布式策略和主动型全分布策略。与调度功能主要集中在前端机的集中式策略比较,分布式策略将调度功能部分离散至后端节点,改善了系统的可扩展性。而主动型全分布式调度则进一步实现了调度分派功能的完全离散化,通过后端机的主动拉取事件和频率调控实现了负载平衡的自调节,极大地改善了系统的扩展性和服务效率。通过试验研究和试验表明,这三种都有效地降低了集群的响应服务请求的时间,还保证了系统的输出最大化。
This paper presents three real-time scheduling schemes for cluster servers：centralized scheme,distributed scheme and pull-based distributed scheme.Distributed scheme deploys scheduling on the end-node,while the scheduling work of centralized scheme is on the front-nodes,and that makes the former has a greater scalability.Pull-based distributed scheme makes end-nodes ask for events and direct load balance by themselves,to improve the scalability and efficiency of real-time cluster system.Lots of experimental results have been presented,illustrating the three scheduling schemes are benefit for decreasing the response time and maximizing the system throughout.
出处
《计算机工程与应用》
CSCD
北大核心
2007年第25期133-139,146,共8页
Computer Engineering and Applications
基金
国家高技术研究发展计划(863)( the National High- Tech Research and Development Plan of China under Grant No.2003AA116010)
国家教育部新世纪人才支持计划 (the New Century Excellent Talent Foundation from MOE of China under Grant No.NCET-04-0843)
重庆市自然科学基金(the Natural Science Foundation of Chongqing City of China under Grant No.2005BB2192) 。
关键词
集群服务器
实时服务
调度策略
实时响应特性
cluster server
real-time service
scheduling schemes
real-time response characteristic
