本文選題：虛擬機 + 網(wǎng)絡(luò)帶寬��； 參考：《華中科技大學(xué)》2012年碩士論文

【摘要】：目前虛擬化技術(shù)的研究工作主要集中在各種主流硬件的虛擬化，虛擬機網(wǎng)絡(luò)帶寬分配方面的研究工作比較少。如果虛擬機的網(wǎng)絡(luò)帶寬無法根據(jù)應(yīng)用的需求進行必要的控制，相互的帶寬爭用將使得應(yīng)用的功用無法得到保障。虛擬化平臺Xen的網(wǎng)絡(luò)帶寬分配機制，僅限于在虛擬機創(chuàng)建時對網(wǎng)絡(luò)帶寬進行分配，虛擬機運行過程中嚴格限制虛擬機所能占用的網(wǎng)絡(luò)帶寬上限。該機制所有的操作對用戶透明，虛擬機創(chuàng)建之后，網(wǎng)絡(luò)帶寬無法調(diào)節(jié)，嚴重缺乏用戶實際參與網(wǎng)絡(luò)帶寬分配的操作空間，用戶實際的帶寬分配需求無法得到很好的滿足。 基于Xen網(wǎng)絡(luò)帶寬分配機制的研究，針對其存在的不足，設(shè)計并實現(xiàn)了虛擬機網(wǎng)絡(luò)帶寬動態(tài)調(diào)節(jié)機制，解決了上述問題。首先，在用戶的控制臺，提供面向用戶的帶寬調(diào)節(jié)接口；其次，在網(wǎng)絡(luò)設(shè)備的驅(qū)動層，實現(xiàn)帶寬動態(tài)調(diào)節(jié)。面向用戶的帶寬調(diào)節(jié)接口，可以從控制臺接收用戶的帶寬調(diào)節(jié)請求，更新設(shè)備信息存儲系統(tǒng)中網(wǎng)絡(luò)帶寬參數(shù)的值，通過修改網(wǎng)絡(luò)設(shè)備狀態(tài)的方式，觸發(fā)驅(qū)動層執(zhí)行帶寬調(diào)節(jié)操作；驅(qū)動層的帶寬動態(tài)調(diào)節(jié)，監(jiān)控網(wǎng)絡(luò)設(shè)備的狀態(tài)，設(shè)備狀態(tài)發(fā)生變化時即響應(yīng)觸發(fā)，從虛擬化驅(qū)動的底層訪問設(shè)備信息存儲系統(tǒng)，獲取網(wǎng)絡(luò)帶寬參數(shù)的新值，對虛擬機的網(wǎng)絡(luò)帶寬進行重新分配，完成網(wǎng)絡(luò)帶寬的動態(tài)調(diào)節(jié)。為了驗證虛擬機網(wǎng)絡(luò)帶寬動態(tài)調(diào)節(jié)實現(xiàn)方法的有效性，探討了一種簡化了的帶寬動態(tài)分配模型，由用戶層的帶寬動態(tài)分配策略結(jié)合虛擬機網(wǎng)絡(luò)帶寬的實際使用情況，生成動態(tài)的帶寬調(diào)節(jié)請求，調(diào)用面向用戶的帶寬調(diào)節(jié)接口，實現(xiàn)虛擬機網(wǎng)絡(luò)帶寬的按需動態(tài)調(diào)節(jié)。 實驗表明，在Xen網(wǎng)絡(luò)帶寬分配機制基礎(chǔ)之上，，虛擬機網(wǎng)絡(luò)帶寬的動態(tài)調(diào)節(jié)機制，在虛擬機運行過程中，從控制臺接收用戶帶寬調(diào)節(jié)請求，在驅(qū)動層對網(wǎng)絡(luò)帶寬進行重新分配，實現(xiàn)了動態(tài)調(diào)節(jié)虛擬機網(wǎng)絡(luò)帶寬的功能。在帶寬動態(tài)調(diào)節(jié)實現(xiàn)方法的有效性驗證測試中，由帶寬動態(tài)分配策略生成動態(tài)的帶寬調(diào)節(jié)請求，虛擬機網(wǎng)絡(luò)帶寬動態(tài)調(diào)節(jié)機制具體執(zhí)行帶寬調(diào)節(jié)，測試結(jié)果達到了帶寬動態(tài)分配策略提高虛擬機帶寬使用滿足率，提高帶寬資源利用率的預(yù)期目標(biāo)，驗證了虛擬機網(wǎng)絡(luò)帶寬動態(tài)調(diào)節(jié)實現(xiàn)方法的有效性。
[Abstract]:At present, the research of virtualization technology is mainly focused on the virtualization of various mainstream hardware, virtual machine network bandwidth allocation research work is less. If the network bandwidth of virtual machine can not be controlled according to the requirement of the application, the function of the application can not be guaranteed by the bandwidth contention. The network bandwidth allocation mechanism of the virtualization platform Xen is limited to the allocation of the network bandwidth when the virtual machine is created, and the upper limit of the network bandwidth that the virtual machine can occupy is strictly limited during the running process of the virtual machine. All the operations of the mechanism are transparent to the users. After the virtual machine is created, the network bandwidth can not be adjusted, and the operation space for users to participate in the network bandwidth allocation is seriously lacking, and the actual bandwidth allocation needs of users cannot be well satisfied. Based on the research of Xen network bandwidth allocation mechanism and its shortcomings, a virtual machine network bandwidth dynamic adjustment mechanism is designed and implemented to solve the above problems. Firstly, the user-oriented bandwidth adjustment interface is provided in the user's console; secondly, the bandwidth dynamic adjustment is realized in the driver layer of the network device. A user-oriented bandwidth adjustment interface can receive user bandwidth adjustment requests from the console, update the values of network bandwidth parameters in the device information storage system, and modify the status of network devices. Trigger driver layer performs bandwidth adjustment operation, the driver layer dynamically adjusts bandwidth, monitors the state of network devices, and responds to trigger when the state of the device changes, and accesses the device information storage system from the bottom layer driven by virtualization. The new value of the network bandwidth parameter is obtained and the network bandwidth of the virtual machine is reallocated to realize the dynamic adjustment of the network bandwidth. In order to verify the effectiveness of the realization method of dynamic adjustment of virtual machine network bandwidth, a simplified dynamic bandwidth allocation model is discussed, which combines the dynamic bandwidth allocation strategy of user layer with the actual use of virtual machine network bandwidth. The dynamic bandwidth adjustment request is generated and the user-oriented bandwidth adjustment interface is called to realize the on-demand dynamic adjustment of the virtual machine network bandwidth. Experimental results show that, based on the Xen network bandwidth allocation mechanism, the virtual machine network bandwidth dynamic adjustment mechanism, in the virtual machine running process, from the console to receive user bandwidth adjustment requests, in the driver layer to redistribute the network bandwidth. The function of dynamically adjusting the network bandwidth of virtual machine is realized. In the validation test of the realization method of dynamic bandwidth adjustment, the dynamic bandwidth allocation strategy is used to generate dynamic bandwidth adjustment request, and the virtual machine network bandwidth dynamic adjustment mechanism performs the bandwidth regulation concretely. The test results show that the dynamic bandwidth allocation strategy can improve the bandwidth utilization rate of virtual machines and improve the utilization of bandwidth resources. The effectiveness of the implementation method of virtual machine network bandwidth dynamic adjustment is verified.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2012
【分類號】：TP302

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相關(guān)期刊論文 前2條

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