面向桌面环境的索引实时更新方法  

Index Real-Time Updating Method for Desktop Environment

作　　者：杨凯飞 李文波[1] 柯川 YANG Kai-Fei LI Wen-Bo KE Chuan(National Engineering Research Center of Fundamental Software, Institute of Software, CAS, Beijing 100190, China University of Chinese Academy of Sciences, Beijing 100049, China)

机构地区：[1]中国科学院软件研究所基础软件国家工程研究中心,北京100190 [2]中国科学院大学,北京100049

出　　处：《计算机系统应用》2017年第10期20-28,共9页Computer Systems & Applications

基　　金：国家高技术研究发展计划(863计划)(2013AA01A603)

摘　　要：在桌面计算环境中,文件和目录频繁发生新建、删除、修改、重命名、移动、复制等变化,这对桌面索引更新的实时性和性能提出更高要求,而传统的桌面索引更新方法完全或部分依赖周期性全盘扫描,往往需要大规模索引重建,导致索引生成延迟大、系统资源占用高.针对这些弊端,本文提出了一种基于文件系统事件监听的桌面索引实时更新方法,并实现了相应的桌面索引实时更新系统.实验表明:本文提出的索引更新方法延迟低、系统资源占用低.In the desktop computing environment, files and directories are frequently changed, such as being created,deleted, modified, renamed, moved, and copied, which has higher demands on the real-time updating of desktop index and its efficiency. However,the traditional desktop index updating methods are fully or partially dependent on periodically full scan, which inevitably requires a large-scale index reconstruction and leads to long delay of index generation and high usage of system resources. In order to overcome these drawbacks, this paper puts forward a new desktop index real-time updating method based on a new file system events monitoring, and implements corresponding desktop index real-time updating system. Experimental results show that the proposed index updating method provides lower latency and lower usage of system resources.

关 键 词：桌面搜索 文件系统监控 索引更新 文本抽取 inotify 

分 类 号：TP391.3[自动化与计算机技术—计算机应用技术]