实验教学云系统中虚拟机分发模式的对比与研究

Research on comparative analysis of the virtual machine's distribution scheme in the cloud system of teaching lab

以院级实验室云系统为应用背景,为提高云系统服务端效能和云桌面客户端使用效率,针对实际教学运行中出现的“桌面暂停”现象,对虚拟机的分布式运行模式展开研究。通过创建实验云系统,在其VISP中部署了“预加载”和“共享模式”两种模式的KVM虚拟机。再采用APPTimer工具进行相关的效率测试实验,实验中采集和整理了不同模式运行的环境配置参数、指标参数和性能测试数据,并利用采样定量和对比等分析方法,得出两种模式的技术特征及性能差异。最后基于虚拟机分发模式正对性地提出了应用层面的优化配置建议。

Based on the application background of laboratory cloud system,in order to improve the efficiency of the cloud server and cloud desktop client,the distributed operation mode of the virtual machine is investigated for dealing with the phenomenon of“desktop pause”in the actual teaching operation.Firstly,through establishing an experimental cloud system,KVM virtual machines in both“Preloaded”and“Shared”modes are deployed in their VISP.Secondly,we apply the APPTimer tool to carry out relevant efficiency test experiments.During the experiment,the environment configuration parameters,index parameters and performance test data of different modes of operation are collected and analyzed,and then the technical characteristics and performance differences of the two modes are obtained by utilizing quantitative and contrast analysis methods.Finally,based on the virtual machine distribution mode,we present application-level optimization configuration proposal.