CAJ | 학술논문

高效的任务调度机制能够更好地满足用户的 QoS 需求,实现各物理主机间的负载均衡,从而提高云计算环境的整体性能.而传统的任务调度往往只考虑任务的响应时间或安全性等,且负载均衡策略是静态的.根据云计算的弹性化和虚拟化等新特性,综合考虑任务的性能 QoS 和信任 QoS,提出一种在云计算环境下的任务调度机制,采用虚拟机迁移技术实现动态负载均衡.通过在 CloudSim2.1仿真环境下的分析和比较,该任务调度机制不但可以提高用户满意度,而且可以有效实现负载均衡.
고효적임무조도궤제능구경호지만족용호적 QoS 수구,실현각물리주궤간적부재균형,종이제고운계산배경적정체성능.이전통적임무조도왕왕지고필임무적향응시간혹안전성등,차부재균형책략시정태적.근거운계산적탄성화화허의화등신특성,종합고필임무적성능 QoS 화신임 QoS,제출일충재운계산배경하적임무조도궤제,채용허의궤천이기술실현동태부재균형.통과재 CloudSim2.1방진배경하적분석화비교,해임무조도궤제불단가이제고용호만의도,이차가이유효실현부재균형.
In cloud, the needs of the user’s QoS can be better met and the load balancing between physical hosts can be achieved depending on an efficient scheduling mechanism. The traditional scheduling mechanisms often concern only about the response time of tasks or security, and load balancing strategy is static. The overall performance of the cloud computing environ-ment needs to be improved. Based on the flexibility, virtualization and other new features of cloud computing, this paper proposes a task scheduling mechanism considering performance QoS and trust QoS of tasks. It uses virtual machine migration technology to achieve dynamic load balancing. Simulation by CloudSim2.1 shows the scheduling mechanism will not only improve satisfac-tion of customers but also achieve load balancing effectively.