保障服务质量的节能流媒体存储系统  

Energy-efficient streaming media storage system with QoS guarantee

作　　者：柴云鹏[1] 都志辉[1] 李三立[1] 

机构地区：[1]清华大学计算机科学与技术系,北京100084

出　　处：《清华大学学报（自然科学版）》2010年第1期71-74,共4页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(60773148;60503039)

摘　　要：为了节约能源并保障服务质量(quality of service,QoS),提出了一种保障服务质量的节能流媒体存储系统的设计。通过动态的磁盘分组和实时的数据交换,将所有磁盘划分为重负载的性能磁盘组和轻负载的节能磁盘组。提出视频数据分块算法,并用以提高系统的节能效果和服务质量。实验数据表明:该系统适应流媒体应用的特点,在保障服务质量的前提下,节能效果是FT算法的16.34倍、PDC算法的4.47倍。An energy-efficient streaming media storage system was developed to save energy and to guarantee the quality of service （QoS） in streaming media storage systems. This system dynamically divides the disks into two groups with relatively heavy and light loads by exchanging data between the two disk groups in real-time. A new energy-efficient data splitting scheme is used to enhance the energy conservation and the QoS. Simulations show that this system matches well with streaming media applications. The energy reductions are 16.36 times greater than that of the FT algorithm and 4.47 times greater than that of the PDC algorithm.

关 键 词：绿色计算 流媒体 节能 存储 服务质量(QoS) 

分 类 号：TP37[自动化与计算机技术—计算机系统结构]