基于能耗的移动实时数据库系统服务质量管理  

Energy consumption-based managing service quality for mobile real-time database systems

作　　者：向军[1] 李国徽[1] 

机构地区：[1]华中科技大学计算机科学与技术学院

出　　处：《华中科技大学学报（自然科学版）》2008年第5期53-56,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

摘　　要：利用移动实时数据中服务质量技术来解决由于负载不可预测带来的性能不可靠性问题,同时结合不精确计算技术提出一种移动实时数据库性能测度(如事务错过截止期比率和能耗),来保障系统服务质量.利用反馈控制调度和处理器动态电压调节,从而实现系统性能和能耗自适应调整,并以一种新算法予以实现,以达到减少系统损失的目的.通过仿真实验评估算法可从稳定性能和暂态性能保证系统预定的服务质量规范.Quality of service （QoS） technology is used in mobile and real-time database systems to improve system performance fallibility when the system workload is unpredictable. A novel performance metrics was proposed to assure the service quality in mobile and real-time database, for example deadline miss ratio of transaction or energy consumption with imprecise computations. The system performance was self-adjusted with feedback control scheduling and dynamic voltage adjustment on the processor to decrease damage, and I was realized with a novel feedback control algorithm. The algorithms and feedback control architecture can make steady and transient QoS performance not to be beyond the reference through simulation experiments.

关 键 词：移动实时数据库 不精确计算 服务质量 能耗 截止期 反馈控制 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]