【摘要】：虛擬化技術(shù)現(xiàn)在被廣泛的應(yīng)用于云計算來支持混合和動態(tài)負載，高速網(wǎng)絡(luò)接口也廣泛應(yīng)用于各個云平臺上，平臺虛擬機之間的網(wǎng)絡(luò)性能往往對云平臺的整體性能產(chǎn)生很大的影響，因此提高高速網(wǎng)絡(luò)I/O虛擬化的性能對促進云計算的發(fā)展有著十分重大的意義。虛擬機監(jiān)管器（VMM）中的調(diào)度器在分配資源方面扮演著非常重要的角色。然而，虛擬機（VM）中的應(yīng)用類型對于調(diào)度器來說是不可知的，因此I/O密集型和CPU密集型任務(wù)被同等對待，這使得虛擬機不能夠充分利用像10GB以太網(wǎng)這樣的高性能網(wǎng)絡(luò)。 本文介紹了SR-IOV的網(wǎng)絡(luò)解決方案，通過實驗說明現(xiàn)在Xen默認的信用值調(diào)度器不能夠有效的利用高性能網(wǎng)絡(luò)，并找出了兩個主要的原因。第一，I/O密集型虛擬機在高系統(tǒng)負載的情況下，得不到足夠的信用值來處理I/O；第二，I/O密集型虛擬機得不到及時的調(diào)度。針對這些問題，本文提出了一種新穎的調(diào)度模型，利用兩種優(yōu)化來移除調(diào)度器帶來的性能瓶頸。在本模型中，通過監(jiān)管客戶虛擬機的行為，把它們劃分成了I/O密集型和CPU密集型虛擬機。I/O密集型虛擬機能夠獲得CPU密集型虛擬機愿意共享的額外信用值，除此之外，系統(tǒng)可用的信用值總量也會智能地調(diào)節(jié)來加速I/O任務(wù)的響應(yīng)。 通過檢測程序測試的實驗結(jié)果表明在系統(tǒng)負載非常重的情況下，，我們的調(diào)度模型在能夠在保證調(diào)度的公平性不受到過分破壞的前提下，有效地提升帶寬和響應(yīng)時間。
[Abstract]:Virtualization technology is now widely used in cloud computing to support hybrid and dynamic load, high-speed network interfaces are also widely used in various cloud platforms, The network performance between platform virtual machines often has a great impact on the overall performance of cloud platform, so improving the performance of high-speed network I / O virtualization is of great significance to promote the development of cloud computing. The scheduler in the hypervisor (VMM) plays a very important role in allocating resources. However, the types of applications in virtual machine (VM) are unknown to schedulers, so I / O intensive and CPU intensive tasks are treated equally, which makes virtual machines unable to make full use of high performance networks such as 10GB Ethernet. This paper introduces the network solution of SR-IOV. The experiment shows that the default credit scheduler of Xen can not utilize the high performance network effectively, and finds out two main reasons. First, I / O intensive virtual machines do not have enough credit to handle I / O under high system load; second, I / O intensive virtual machines are not scheduled in a timely manner. In order to solve these problems, a novel scheduling model is proposed, which uses two optimizations to remove the performance bottleneck caused by the scheduler. In this model, by monitoring the behavior of customer virtual machines, they are divided into I / O intensive and CPU intensive virtual machines. I / O intensive virtual machines can obtain additional credit values that CPU intensive virtual machines are willing to share. The total amount of credit available to the system will also be adjusted intelligently to accelerate the response of the I / O task. The test results show that our scheduling model can effectively improve the bandwidth and response time while ensuring that the fairness of the scheduling is not unduly damaged.
【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TP302

【共引文獻】

相關(guān)會議論文 前1條

1 董耀祖;張獻濤;田坤;徐雪飛;;安騰架構(gòu)硬件輔助完全虛擬化設(shè)計與實現(xiàn)[A];2007系統(tǒng)仿真技術(shù)及其應(yīng)用學(xué)術(shù)會議論文集[C];2007年

相關(guān)碩士學(xué)位論文 前5條

1 孫世昶;虛擬化技術(shù)研究及PCI設(shè)備直接訪問的實現(xiàn)[D];大連理工大學(xué);2006年

2 姚遠;Pcanel/V2-基于Intel VT-x技術(shù)的VMM架構(gòu)[D];浙江大學(xué);2007年

3 楊楠;Lyn：新型輕量級虛擬化技術(shù)[D];浙江大學(xué);2007年

4 宋曦寧;基于Xen的虛擬化辦公應(yīng)用環(huán)境研究[D];中國科學(xué)院研究生院（沈陽計算技術(shù)研究所）;2007年

5 朱鴻偉;虛擬化安全關(guān)鍵技術(shù)研究[D];浙江大學(xué);2008年

本文編號：2314032