基于休眠模式与信息可视的云用户接入阈值策略的研究  

Research on access threshold strategy of cloud users based on sleep mode and observable information

作　　者：安红宇 金顺福[1,2,3] 朱静 An Hongyu;Jin Shunfu;Zhu Jing(School of Information Science and Engineering,Yanshan University,Qinhuangdao 066004;Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province,Qinhuangdao 066004;Key Laboratory for Software Engineering of Hebei Province,Qinhuangdao 066004)

机构地区：[1]燕山大学信息科学与工程学院,秦皇岛066004 [2]河北省计算机虚拟技术与系统集成重点实验室,秦皇岛066004 [3]河北省软件工程重点实验室,秦皇岛066004

出　　处：《高技术通讯》2020年第3期274-279,共6页Chinese High Technology Letters

基　　金：国家自然科学基金(61872311,61472342);河北省自然基金(F2017203141)资助项目。

摘　　要：休眠模式广泛应用于绿色云计算环境下的虚拟机(VM)集群中。为了揭示云用户的纳什均衡行为,最大化云系统的社会收益,针对周期性休眠机制,面向云用户触发的网络业务,研究接入阈值策略。在完全可视条件下,求解新到达云用户的预期逗留时间,并建立基于线性收支结构的个人收益函数,得出云用户个人最优接入阈值。面向唤醒状态和休眠状态设置不同的缓存容量,构建多重同步休假模型。运用高斯赛德尔方法,给出排队模型的稳态解,得出云用户社会最优接入阈值。数值实验揭示出在不同虚拟机状态下云用户社会最优接入阈值均小于个人最优接入阈值,为优化云计算环境下的用户接入控制提供了理论依据。Sleep mode has been widely applied in virtual machine(VM)clusters in green cloud environments.In order to reveal the Nash equilibrium behavior of cloud users and maximize the social benefit of the cloud system,the access threshold strategy is investigated for the network services triggered by cloud users with a periodic sleep mode.From a fully observable scenario,the expected delay of a newly arriving cloud user is calculated.In addition,a reward-cost structure based benefit function of an individual cloud user is established,as well as the individually optimal access threshold of cloud users is obtained.With respect to the awake state and the sleep state,respectively,a synchronous multiple-vacation queueing model with diverse cache capacities is constructed.By using the Gauss-Seidel method,we derive the steady-state solution of the queueing model and obtain the socially optimal access threshold of cloud users.The experiment results show that the socially optimal access threshold is always smaller than the individually optimal access threshold no matter whether the VMs are asleep or awake.The proposed method provides a theoretical basis for optimizing the access control of users over cloud environment.

关 键 词：绿色云计算 休眠模式 完全可视排队 收益函数 接入阈值 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]