本文關(guān)鍵詞： Hyper-v虛擬化 Wi-Fi 排課算法 云計(jì)算　出處：《大連海事大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著實(shí)驗(yàn)教學(xué)內(nèi)容的豐富,海量的數(shù)據(jù)應(yīng)用需要被遷移到實(shí)驗(yàn)教學(xué)平臺(tái)中,異構(gòu)網(wǎng)絡(luò)、靜態(tài)資源、管理復(fù)雜、成本高等問題成為新一輪教學(xué)改革浪潮中的重要突破口。本文提出對(duì)基于虛擬化技術(shù)的開放式實(shí)驗(yàn)室管理系統(tǒng)進(jìn)行研究。通過服務(wù)器虛擬化、網(wǎng)絡(luò)設(shè)備智能化等技術(shù)實(shí)現(xiàn)實(shí)驗(yàn)室的開放化及智能化管理,在云計(jì)算環(huán)境下優(yōu)化計(jì)算資源,為客戶端瘦身,為師生提供更加優(yōu)質(zhì)的實(shí)驗(yàn)教學(xué)服務(wù)。首先,搭建大型的、適用于海量數(shù)據(jù)計(jì)算與存儲(chǔ)的云計(jì)算平臺(tái),把用戶數(shù)據(jù)、應(yīng)用軟件等部署在服務(wù)器集群上,通過并行及分布式計(jì)算技術(shù)來為用戶提供高性能服務(wù)。使用瘦客戶機(jī)取代主機(jī),極大地降低了實(shí)驗(yàn)室建設(shè)成本,提高了硬件設(shè)備的可擴(kuò)展性。為保證客戶端視頻播放效果,采用視頻重定向技術(shù),將視頻文件直接傳送到瘦客戶端,經(jīng)ARM硬件芯片進(jìn)行解碼播放,降低了對(duì)服務(wù)器CPU的占用率。為達(dá)到與PC 一致的云桌面用戶體驗(yàn),采用RDP8.0高效交付協(xié)議,通過自動(dòng)檢測(cè)網(wǎng)絡(luò)狀態(tài)、自適應(yīng)圖形、媒體流等優(yōu)化技術(shù),有效提升了傳輸效率。其次,設(shè)計(jì)與實(shí)現(xiàn)開放式實(shí)驗(yàn)室管理系統(tǒng)網(wǎng)站,功能包括:設(shè)備信息管理、資源統(tǒng)計(jì)、預(yù)約管理、課程管理、用戶管理等,在實(shí)現(xiàn)基本的信息電子化管理的同時(shí),為學(xué)生提供了一體化的實(shí)驗(yàn)預(yù)約服務(wù)及上機(jī)指導(dǎo);為教師提供了高效的實(shí)驗(yàn)課排課功能,.排課問題屬于NP完全問題(多項(xiàng)式復(fù)雜程度的非確定性問題),而實(shí)驗(yàn)課編排的復(fù)雜度要高于普通理論課編排,因此,提出了集自動(dòng)排課算法和手動(dòng)選課相結(jié)合的排課功能。自動(dòng)排課算法用優(yōu)先級(jí)搜索與對(duì)比來取代最短路徑法則,簡(jiǎn)化搜索層級(jí),降低排課算法的時(shí)空復(fù)雜度。最后,設(shè)計(jì)與實(shí)現(xiàn)設(shè)備電源的無線控制終端,為每臺(tái)實(shí)驗(yàn)設(shè)備配置一個(gè)AP節(jié)點(diǎn),通過布置Wi-Fi網(wǎng)絡(luò)來實(shí)現(xiàn)設(shè)備電源的智能化控制,學(xué)生預(yù)約實(shí)驗(yàn)成功后,SMS模塊會(huì)自動(dòng)發(fā)送短信通知,學(xué)生可以自主刷卡上機(jī),由客戶端服務(wù)器發(fā)送命令打開設(shè)備電源。在實(shí)際測(cè)試中,視頻出傳輸流暢,瘦客戶端能夠?qū)崟r(shí)接收、轉(zhuǎn)碼、播放。每增加一個(gè)客戶端播放視頻,服務(wù)器CPU、內(nèi)存、占用帶寬等指數(shù)約增長(zhǎng)4.5%。每個(gè)客戶端占用寬帶約1.4Mbps,網(wǎng)絡(luò)延時(shí)在1.3s以內(nèi),滿足用戶需求。
[Abstract]:With the rich content of experimental teaching, massive data applications need to be migrated to the experimental teaching platform, heterogeneous networks, static resources, complex management, The problem of high cost has become an important breakthrough in the new wave of teaching reform. This paper puts forward the research of open laboratory management system based on virtualization technology. The intelligent network equipment and other technologies realize the opening and intelligent management of the laboratory, optimize the computing resources in the cloud computing environment, reduce the size of the client, and provide higher quality experimental teaching services for the teachers and students. Cloud computing platform suitable for mass data computing and storage, deploying user data and application software on server cluster, providing high performance services for users through parallel and distributed computing technology. It greatly reduces the cost of laboratory construction and improves the expansibility of hardware equipment. In order to ensure the effect of video playback on client side, video files are transferred directly to thin client by video redirection technology. The ARM hardware chip is used to decode and play, which reduces the utilization of server CPU. In order to achieve the cloud desktop user experience consistent with PC, RDP8.0 is adopted to deliver the protocol efficiently, and the network state is automatically detected and the graphics are adaptive. Media flow and other optimization techniques effectively improve the transmission efficiency. Secondly, design and implementation of an open laboratory management system website, including: equipment information management, resource statistics, reservation management, course management, user management, etc. At the same time, it provides students with integrated experimental reservation service and computer guidance. This problem belongs to the NP complete problem (the degree of polynomial complexity is non-deterministic problem), but the complexity of the experimental course arrangement is higher than that of the common theory course arrangement, therefore, the problem of arranging the experiment course belongs to the NP-complete problem, and the complexity of the experimental course arrangement is higher than that of the general theory course arrangement. This paper puts forward the course scheduling function which combines automatic course scheduling algorithm with manual course selection. Automatic course scheduling algorithm uses priority search and contrast to replace the shortest path rule, simplifies the search level and reduces the space-time complexity of the course scheduling algorithm. The wireless control terminal of equipment power supply is designed and implemented. An AP node is configured for each experimental device. The intelligent control of the equipment power supply is realized by arranging the Wi-Fi network. After the success of the student reservation experiment, the Wi-Fi module will automatically send short message notification. Students can independently swipe the card on the computer, the client and server send orders to open the device power. In the actual test, the video output is smooth, thin client can receive, transcode, play in real time. Each additional client plays video, Server CPU, memory, bandwidth and other exponent increases 4.5. Each client occupies about 1.4 Mbps. the network delay is less than 1.3 seconds to meet the needs of users.
【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TP311.52

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