云计算环境下任务调度技术的研究进展

Research Progresses of Task Scheduling Technology in Cloud Computing Environment

云计算应用大规模和虚拟化的资源,通过计算机网络随时随地向用户提供基于不同需求的服务.作为影响云服务的关键因素,任务调度被认为提升云计算服务质量的有效手段之一.如何保持高效和公平,保障服务质量(QoS)和最大化用户与服务提供商的经济利益是研究的难点.论述当前云计算中任务调度算法的研究现状和发展趋势,分析符合云计算服务需求的任务调度算法的新特性.通过探讨存在的挑战和亟待解决的关键性问题,为下一步更深入的研究指出方向.

Cloud computing uses very large scalable and virtualized resources to provide services based on different requirement via computer network in any time and any place. As a crucial factor affecting cloud services, task scheduling is referred to as one of the effective means of improving the quality of cloud computing services. How to keep efficiency and fairness, and how to guarantee quality of service （QOS） and maximize the economic interests of the users and service providers are difficult problems for study. Though an in-depth study of the major research works on this field, this paper reviews the research status and development trend of task scheduling algorithms in cloud computing environment, and analyzes new features of task scheduling technology to meet the needs of cloud computing service. Finally, by discussing existing challenges and key problems that needs to be solved, the next research orientation will be found.