一种面向虚拟化软件的流式加载虚拟文件系统  

Virtual File System for Streaming Delivery of Software

作　　者：崔亚兵[1] 钟亮[1] 康俊彬[1] 沃天宇[1] 

机构地区：[1]北京航空航天大学计算机学院软件开发环境国家重点实验室,北京100191

出　　处：《小型微型计算机系统》2011年第11期2182-2186,共5页Journal of Chinese Computer Systems

基　　金：国家"九七三"重点基础研究发展计划项目(2011CB302602)资助;国家自然科学基金项目(91018004)资助;软件开发环境国家重点实验室项目(SKLSDE-2010-ZX-01)资助

摘　　要：近年来,随着云计算和虚拟化技术的普及和发展,软件的网络化、服务化使用成为一种新的趋势.在此背景下,虚拟化的软件能否快速加载与流畅运行成为软件能否高质量服务化运营的瓶颈问题.本文基于Windows NT平台设计实现了一种专门支持虚拟化软件启动与运行的虚拟文件系统,该系统采用按需即时流式下载方式,使应用程序边启动边下载,避免了启动前的等待过程,有效地加快了软件启动速度.实验结果表明,与完全下载方式相比,该系统能使虚拟化软件首次启动的时间减少20%至60%,很好地平滑了程序的运行过程,极大地改善了用户体验.In recent years, with the cloud computing and virtualization technology popularizing and developing, the Software as a Service （ SaaS）, largely enabled by the Interact, has become an innovative software delivery model. In this environment, if the virtual software runs in traditional way, that is to start up after total downloaded, it will be time-consuming and greatly influence the user＇ s experience. However, the streaming execution mode will enable the virtual software to start up while downloading. According to this conception, we design and implement a virtual file system for streaming delivery of software based on Windows NT system. The experimental results show that the first startup times of virtualized software have reduced by 20% to 60% and the user＇s experience has been improved effectively.

关 键 词：虚拟化 软件虚拟化 软件即服务 流式加载 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]