%0 Journal Article
%T Block Rearrangement Policy and Grouped Scheduling Algorithms for VOD System<br>用于VOD系统的块重组策略及分组调度算法
%A HUANG Jian-Zhong XIE Chang-Sheng FU Xiang-Lin FANG Zhi-Peng
%A <br>黄建忠
%A 谢长生
%A 傅湘林
%A 方志鹏
%J 计算机科学
%D 2003
%I 
%X With the advances in storage subsystems, compression and network technology, video-on- demand (VOD) is increasingly becoming an important services, the investigation to improve the performance of VOD servers has become a major focus. In this paper, we propose two rearrangements of data block and a request scheduling algorithms. With this approach, the data blocks with comparable access frequency are kept closer to each other, so as to reduce the moving distance of disk head and the seeking time. The simulation result demonstrates that the strategy and algorithms can effectively reduce disk access time and response latency respectively.
%K Block rearrangement strategy
%K Request scheduling algorithms
%K Response latency<br>块重组策略
%K 分组调度算法
%K VOD系统
%K 视频点播系统
%K 租赁模式
%K 视频服务器
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=44E28BC59310298A&yid=D43C4A19B2EE3C0A&vid=340AC2BF8E7AB4FD&iid=DF92D298D3FF1E6E&sid=8E6AB9C3EBAAE921&eid=E514EE58E0E50ECF&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=8