Xen虚拟机的状态监测与系统性能优化

发布时间：2018-08-27 12:53

【摘要】：目前，虚拟化技术和Xen已经是研究学者讨论的热点，对于传统的，单一操作系统的计算机来说，系统资源是由操作系统进行统一的分配调度的。早期的操作系统只能进行单一的任务处理，分时系统的产生开始了多个任务同时处理的时代，而虚拟化技术就是针对这个问题的一个优良的解决方案，同时也让计算机技术进入了虚拟化时代。传统的操作系统通过对用户和应用程序提供虚拟接口层，来完成设备的的管理和应用，进而满足用户的各种需求。本文以虚拟化技术和Xen虚拟机的状态监测和性能优化为主题，通过对主流状态监测工具Xenmon、Xenoprof、Xentop、XenCenter的调研与总结，，以及对Xenoprof和XenCenter的实际应用，对虚拟机的状态监测有了直观的认识和理解，在通常情况下，人们从资源利用率、吞吐量和延迟三个角度来评测一个计算机系统的好坏，但是由于Xen虚拟系统体系结构的特点以及实现的复杂性决定了他的性能监测所需要关注的问题与传统计算机系统不尽相同，而是需要从CPU、内存、网络和磁盘等不同的角度考虑它各方面的性能。同时，在监测工作的基础之上，本文对经典的Credit算法进行了研究，在阐述了优缺点之后，对它做出了两种不同的改进方法以适应不同的环境需要，将Domain执行任务对于处理时间和计算资源要求实时变化的情况进行了较为充分的考虑，并使用模拟环境进行了仿真实验，同时对仿真工具SchedSim也进行了简要的介绍。
[Abstract]:At present, virtualization technology and Xen have become a hot topic of discussion among researchers. For traditional computers with a single operating system, system resources are allocated and scheduled uniformly by the operating system. Virtualization technology is a good solution to this problem, but also let the computer technology into the era of virtualization. The traditional operating system provides virtual interface layer for users and applications to complete the management and application of equipment, and then meet the various needs of users.
In this paper, virtualization technology and Xen virtual machine state monitoring and performance optimization as the theme, through the mainstream state monitoring tools Xenmon, Xenoprof, Xentop, Xen Center research and summary, as well as the actual application of Xenoprof and Xen Center, the virtual machine state monitoring has a intuitive understanding and understanding, in general, people from the capital. Source utilization, throughput and latency are three aspects to evaluate the performance of a computer system. However, due to the characteristics of Xen virtual system architecture and the complexity of its implementation, the issues that need to be addressed in performance monitoring are not the same as those in traditional computer systems, but from different angles such as CPU, memory, network and disk. At the same time, on the basis of monitoring work, this paper studies the classical Credit algorithm. After explaining its advantages and disadvantages, it makes two different methods to adapt to different environmental needs. Domain execution tasks require real-time changes in processing time and computing resources. The simulation experiment is carried out in the simulation environment, and the simulation tool SchedSim is also briefly introduced.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP302

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