【摘要】：隨著近幾年網(wǎng)絡(luò)操作系統(tǒng)及其應(yīng)用的興起,虛擬機(jī)動(dòng)態(tài)遷移技術(shù)作為一種重要的系統(tǒng)資源管理和調(diào)度技術(shù)被學(xué)術(shù)界和工業(yè)高度關(guān)注并被廣泛研究。基于云計(jì)算的網(wǎng)絡(luò)操作系統(tǒng)是一種將系統(tǒng)資源通過(guò)網(wǎng)絡(luò)分配給用戶(hù)的全新計(jì)算方式。虛擬機(jī)動(dòng)態(tài)遷移允許系統(tǒng)將一臺(tái)正在運(yùn)行的虛擬機(jī)從一個(gè)物理節(jié)點(diǎn)無(wú)縫地遷移到另外一個(gè)物理節(jié)點(diǎn),而整個(gè)遷移過(guò)程是對(duì)用戶(hù)完全透明和不可感知的。借助虛擬機(jī)動(dòng)態(tài)遷移技術(shù),系統(tǒng)實(shí)現(xiàn)了很多傳統(tǒng)系統(tǒng)很難實(shí)現(xiàn)的功能,比如系統(tǒng)在線(xiàn)維護(hù)和升級(jí)、動(dòng)態(tài)資源管理、系統(tǒng)故障容忍以及動(dòng)態(tài)負(fù)載均衡等,并提高了系統(tǒng)資源利用率和安全性。此外,虛擬機(jī)動(dòng)態(tài)遷移技術(shù)還是實(shí)現(xiàn)綠色計(jì)算的關(guān)鍵技術(shù)。 本論文我們主要做了三方面工作：首先,我們對(duì)課題背景和國(guó)內(nèi)外研究現(xiàn)狀做了詳細(xì)介紹,并對(duì)虛擬機(jī)技術(shù)以及動(dòng)態(tài)遷移技術(shù)原理和具體實(shí)現(xiàn)做了深入研究,為后文自己的科研工作做好了理論準(zhǔn)備。然后,我們提出了一種基于系統(tǒng)負(fù)載的虛擬機(jī)動(dòng)態(tài)遷移控制方法LMC,并設(shè)計(jì)相應(yīng)的實(shí)現(xiàn)模型；此外,特別針對(duì)虛擬機(jī)內(nèi)存遷移這一難題,我們提出了一種基于零拷貝的虛擬機(jī)內(nèi)存遷移方法VMZ,該方法利用遠(yuǎn)程直接內(nèi)存存取技術(shù),避免了遷移數(shù)據(jù)在在系統(tǒng)內(nèi)存、處理器緩存以及網(wǎng)絡(luò)控制器緩存之間進(jìn)行來(lái)回移動(dòng)和拷貝。最后,通過(guò)搭建實(shí)驗(yàn)平臺(tái),我們對(duì)本文提出的兩種方法進(jìn)行了性能評(píng)估。通過(guò)實(shí)驗(yàn)結(jié)果分析可知,我們所提出的基于系統(tǒng)負(fù)載的虛擬機(jī)遷移控制方法能有效避免不必要虛擬機(jī)遷移,并能保證遷移后系統(tǒng)各節(jié)點(diǎn)間的負(fù)載均衡；借助我們所提出的零拷貝內(nèi)存遷移方法,系統(tǒng)縮短了總遷移時(shí)間和宕機(jī)時(shí)間,并有效降低了遷移對(duì)主機(jī)系統(tǒng)的影響。 在文章的最后部分,我們總結(jié)了本文所做的工作,并為以后的科研工作做了針對(duì)性的建議和展望。
[Abstract]:With the rise of network operating systems and their applications in recent years virtual machine dynamic migration technology as an important system resource management and scheduling technology has been highly concerned by academia and industry and has been widely studied. The network operating system based on cloud computing is a new computing method which allocates system resources to users through the network. Virtual machine dynamic migration allows the system to seamlessly migrate a running virtual machine from one physical node to another, and the whole migration process is completely transparent and inperceptible to the user. With the help of virtual machine dynamic migration technology, the system realizes many functions which are difficult to realize in traditional systems, such as system online maintenance and upgrade, dynamic resource management, system fault tolerance and dynamic load balancing, etc. The system resource utilization ratio and security are improved. In addition, virtual machine dynamic migration is also the key technology to implement green computing. In this paper, we mainly do three aspects of work: firstly, we introduce the background of the subject and the research status at home and abroad in detail, and do a deep research on the virtual machine technology and the principle and implementation of dynamic migration technology. For the future of their own scientific research work to prepare for the theory. Then, we propose a dynamic migration control method based on system load, LMC, and design the corresponding implementation model. We propose a zero-copy based virtual machine memory migration method VMZ. this method utilizes remote direct memory access technology to avoid migrating data in system memory. Move and copy back and forth between processor cache and network controller cache. Finally, we evaluate the performance of the two methods proposed in this paper by setting up the experimental platform. The experimental results show that the proposed virtual machine migration control method based on system load can effectively avoid unnecessary virtual machine migration and ensure load balance among nodes after migration. With the help of our proposed zero-copy memory migration method, the system can shorten the total migration time and downtime, and effectively reduce the impact of migration on the host system. In the last part of the article, we summarize the work done in this paper, and make some suggestions and prospects for the future research work.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類(lèi)號(hào)】：TP302

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本文編號(hào)：2160473