Implementation And Optimization Of Desktop Cloud System Based On Fusion Architecture

With the rapid development of informatization and the popularization of computers,the computer equipment used by enterprises,schools,government and other institutions is increasing every year.In order to improve the efficiency of maintenance,more and more organizations have chosen desktop cloud solutions.The current mainstream desktop cloud architectures are VDI(Virtual Desktop Infrastructure)and IDV(Intelligent Desktop Virtualization).Both architectures have their own advantages and disadvantages.The VDI architecture is characterized by "centralized storage,centralized management,and centralized computing".It supports mobile office well,but has higher requirements for network bandwidth and disk I/O speed on the server side;the IDV architecture is characterized by " centralized management and distributed computing".Although IDV architecture solves the problem that virtual desktops relies heavily on network bandwidth,the IDV architecture requires terminal equipment with excellent performance.The desktop and the terminal are often bound to each other,which makes it have poor support for mobile office.Therefore,this dissertation considers the proper integration of the two architecture schemes with complementary advantages.This dissertation uses the QEMU-KVM virtualization technology to combine the advantages of the VDI and IDV architectures,and proposes a fusion architecture of the desktop cloud system.The architecture is characterized by "centralized management,centralized storage,and hybrid computing".The system uniformly manages and stores virtual machine images on the server side,and flexibly determines whether the virtual machine runs on the cloud or on the local terminal.Based on the existing IDV architecture desktop cloud system,this dissertation adds new interfaces and functions to the server and client,and develops a computing node module to realize a desktop cloud system based on fusion architecture.In addition,this dissertation optimizes the consumption of physical resources at the computing node and the virtual network.The former adopts the migration of management virtual machines and the operation of KSM(Kernel same-page Merging)to avoid virtual machine performance degradation caused by exhaustion of server physical resources;the latter adopts VXLAN(Virtual Extensible Local Area Network)multicast and Message forwarding technology builds a virtual network and improves the performance of the virtual network of the desktop cloud system.The desktop cloud system based on fusion architecture implemented in this dissertation solves the defect that the desktop cloud system of the IDV architecture support mobile office poorly,making the system suitable for a wider range of scenarios.In addition,the optimization of the system improves the performance and usability of the system,and improves the user experience.