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1、西北工業(yè)大學博士學位論文協(xié)同虛擬環(huán)境系統(tǒng)的可伸縮性研究姓名:胡小梅申請學位級別:博士專業(yè):計算機科學與技術指導教師:蔡小斌20070601兩北I‘業(yè)人學博七學位論文摘要致性維護方面,該算法測得的實體碰撞偏差比DR算法低8%以上,在網(wǎng)絡延時嚴重的情況下更為明顯,提高了系統(tǒng)的一致性。關鍵詞:協(xié)同虛擬環(huán)境,可伸縮性,分區(qū),負載平衡,時間包圍盒II兩北l:業(yè)人學博十學位論文AbstractCollabomtivevirtImlEnvim砌em(CVE)isasharingVirtualspacemaintainedbyagroupofcompmersinterconn
2、ectedthroughne鉚orks,u∞dtosupporte旋ctivecommunicationsbetv陀entlle璐erstoacllievecoordinationtasl【s.Withtheexpansionofthescaleofapplicationsilldistallceeducation,collaborativedesi印,jointmili伽ytmining觚dolllinemulti—llserg鋤e,improvingthescalabilitybecomesahottopicofre∞archintlle丘eldofCVE
3、.111e咖dyofscalabil時ofcollaborativevin岫lenvironmentsystemsaimst11atthesofhvarestmcn
4、redoesnotneedtodomajormodific撕onsiIlofdertOsupporttheexp趾sionofapplicati∞scale,ke印ingtlleoI’era_tingemciency.【)11etoitsimportancebotllintheoreticalresearchandpmcticalapplicatioIl,scalabilityofcollabom
5、tiveVinualenv的nmentsystems∞edstobcfhrtherstudied.The化seafchworI(andinnovativecontributioflsareasf.oUows:1.Atask-cluste:ringb船edfixCVEpartitioningaIgorithmisproposed.Wimtllisalgorimm,tlle璐erswhichtakepartiIlthes鋤et嬲karc嬲si罌壕dtotllesanleregionalserv既TheexperimelltalresunsshowtIlatthjs
6、algorittlIIIgetsme§imilarpan“ioIlingpeff.omancebuttakesmnchshonerexecutiontimetll柚thatofACSalgoritIllIlwhich、^懈proposedbyMorilIoP.inSpain.2.111eexistiIlgmulti-serverarchitectIl】呤llasthcdefectoflacl【ingthegcncralm孤agememofcVE.Intllispapcr,ahibefarchybasedontailoringtreemodelispropose
7、d.Themaillsenrer,舔tlleconⅡolcenter,panitio鵬tlleCVEaccordingtomcn岫ber柚ddistributionofusers1nCVEbyrealtiInedetection.At豁k—clusteringba∞ddyn鋤icadaptiVepanitioningalgorimmisproposed,whjchc鋤adjustthepanitioningn砌beraccordingtotl培n啪berofusersinthcCVE.Theexp鰣meIl協(xié)lresunsshowtllatt11eoptima
8、lpartitioningperfbm鋤ceaIldaverageexecmiVee街ciencyofthetask.clusteringb硒edfixpartitiollingaIgorithmsarc豫ached.3.UsersaregroupcdaccordingtottleirAreaofIIlterest(AOI)inordertoreducemen咖ork仃amc.Allser掣oupingalgo血llIIIbasedontemplatematchingispmposedtoreducetllecons啪ptionoftllen邑t、vorkrc
9、sourcesarldcomputat