虚拟化网络性能评测和优化技术的研究

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1、XiaoLing1,ShadiIbrahim2,HaiJin1,SongWu1,SongqiaoTao11ClusterandGridComputingLabServicesComputingTechnologyandSystemLabSchoolofComputerScienceandTechnologyHuazhongUniversityofScienceandTechnology2INRIARennes-BretagneAtlantiqueRennes,FranceExploitingSpatialLocalitytoImprove

2、DiskEfficiencyinVirtualizedEnvironmentsDiskefficiencyinvirtualizedenvironmentsVMswithmultipleOSsandapplicationsrunningonaphysicalserverDiskI/OutilizationimpactsI/OperformanceofapplicationsrunningonVMsDiskefficiencydependingonexploitationofspatiallocalityDiskschedulingexplo

3、itsspatiallocalityReducingdiskseekandrotationaloverheadsButachievinghighspatiallocalityisachallengingtaskinavirtualizedenvironmentWhydifficult?ComplicatedI/ObehaviorofVMsMorethanoneprocessrunningonVMs(e.g.Virtualdesktop,dataintensiveapplication)--mixedapplicationsTranspar

4、encyofVirtualizationBlocklayerLacks:agoralviewofI/OaccesspatternsofprocessesinthevirtualizedenvironmentHypervisorSoftwareShareddiskGuestOSStreamingAppFileeditingGuestOSProcessAProcessBGuestOSProcessCProcessDShouldersofGiantsInvasivemodeschedulingSelectingthediskschedulerp

5、airwithinboththehypervisorandVMsaccordingtoaccesspatternofapplications[ICPP’11,SIGOPSOper.Syst.Rev.’10]AnadditionalHypervisor-to-VMinterferenceNon-invasivemodeschedulingStreamingscheduling[Fast’11],Antfarm[USENIXATC’06]AllVMwithsimilarreadapplicationsGrabbingbandwidthamon

6、gVMsAnalysisofdataaccessesofVMsOnlyaspecific(one)applicationisrunningwithinaVMStudiesonimprovingI/OperformanceofapplicationsproceedusWhatdowesolve?ConsideringmixedapplicationsandthetransparencyfeatureofvirtualizationExploringthebenefitofthespatiallocalityandregularityofda

7、taaccessesDiskschedulinghowtoexploitspatiallocalitytomaximizediskefficiencywhilepreservingthetransparencyofvirtualization?OutlineProblemDescriptionRelatedWorkObserveDiskAccesspatternsofVMsPredictionModelDesignofPregatherPerformanceEvalutionConclusionsandFutureWorkDifferen

8、ceofDataAccessTraditionalEnvironmentVirtualizedEnvironmentsimultaneouslyaccessingdifferentpartso