一种QoS收益感知的服务请求动态调度算法  

Dynamic Scheduling Algorithm of Service Request Based on Aware QoS Revenue

作　　者：张中一 孟凡超[1] 初佃辉[1] 钱斌 

机构地区：[1]哈尔滨工业大学(威海)计算机科学与技术学院,山东威海264209

出　　处：《小型微型计算机系统》2017年第12期2791-2796,共6页Journal of Chinese Computer Systems

基　　金：国家科技支撑计划项目(2014BAF07B02)资助;山东省重大科技专项项目(2015ZDXX0201B02)资助;山东省自然科学基金项目(ZR2015FM006)资助

摘　　要：随着云计算产业的发展,云计算逐步走向实际应用,许多传统企业正在将其应用向云服务模式迁移.云服务模式中能够有效减小应用负载,降低服务成本的方法就是多租户模式.在云环境下多租户模式中如何合理安排各个租户的服务请求,通过动态调度租户服务请求来保障各租户的服务质量(Quality of Service,QoS)成为了亟待解决的关键问题.服务请求动态调度是为了保障租户的服务质量,提高服务提供商的资源利用率,因此,需要制定合理的调度方案来达到双方满意的效果.该文从服务请求的服务类型以及租户两方面入手,制定了多租户服务请求动态调度策略,提出了一种以动态QoS收益值为优化目标的服务请求调度算法,该算法能够根据不同租户对服务各种QoS指标的性能需求,对各种类型的多租户服务请求按照动态QoS收益值划分优先级,按照优先级进行调度,与一些常用的方式进行调度相比,能够让平台处理更多重要性较高的服务请求,从而使平台整体的动态QoS收益值更高.With the development of cloud computing industry, cloud computing gradually moves towards practical application. Multi tenant model is a method that can effectively reduce the application load and the cost of service in cloud service model. Many tradition- al companies are moving their applications to the cloud services model. How to arrange service requests reasonably and guarantee the quality of service for each tenant under multi-tenant pattern of cloud environment have became the key problems to be solved. Dynam- ic scheduling of service requests is used to ensure the quality of service and improve the resource utilization of service providers. Therefore, reasonable scheduling scheme should be formulated to satisfy both sides. This paper starts with the type of service request and the tenant in two aspects and formulates a dynamic scheduling policy for multi tenant service request, proposes a scheduling algo- rithm of service request with the optimization goal of dynamic QoS profit. Considering the performance requirements of various kinds of QoS indexes of different tenants, this algorithm can prioritize different types of multi-tenant service requests according to the dynamic QoS profit,and schedule according to the priority, and then compare with some common algorithms. The algorithm can make the platform to handle more service requests of higher importance,which makes the value of overall dynamic QoS profit of platform higher.

关 键 词：云计算 多租户 Qo S收益 服务请求动态调度 组合优化 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]