hustbackup备份系统中负载均衡算法的分析-analysis of load balancing algorithm in hust backup system.docx

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2018-05-29 发布于上海
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hustbackup备份系统中负载均衡算法的分析-analysis of load balancing algorithm in hust backup system.docx

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hustbackup备份系统中负载均衡算法的分析-analysis of load balancing algorithm in hust backup system

AbstractWiththedevelopmentofthesocialinformation,moreandmoreattentionhasbeenpaidontheprotectionofthesecurityofthedata.HustBackupisadisasterrecoverysystemwhichwasdevelopedtoprovidedatabackupfortheWANusers.However,multipleusers`concurrentbackupwillcausetheserverloadunbalancedandreduceeachserver`sprocessingperformance.Itisanurgentproblemabouthowtoeffectivelybalancethedifferencesbetweenthevariousservers,tomaximizetheuseofavailableresources,sothereistheloadbalancingtechnology.Thedifficultiesofloadbalancingconcentrateinthejudgmentandcollectingoftheloadinformation.ThemainloadfactorsofHustBackuparethesizeofthebuckupjobandtheamountofthebackupjob.Thecollectionoftheloadinformationusesthemethodofreal-timedynamicfeedback.Ontheissueofthejudgmentoftheloadinformation,itconsidersseveralvitalfactorsofHustBackupsuchasthepriorityoftheuser,thesizeofthejob,theattributeofthejob,andthetacticofthejob.Intheprocessofthecollectionoftheloadinformation,itincludessystemstartsrunningloadconfigurationinformation,thejobloadfactoraftersystemruns,theloadfactorofthestorageserverandtheloadfactoroftheentiresystem.Themainprocessofloadbalancingcandividedintotwosteps.Whentheloaddoesnotexceedtheloadthresholdofthestorageserver,itusesthewayofpollingwithweightstofindthelightestloadstorageservertorespondtothebackuprequestandaddtheloadthestorageserver.Andwhenthestorageserverisoverloaded,itdynamicallyallocatestheserveraccordingtothepriorityoftheuserandtheRevocationofthejob.Whentheusersrequestforrestoringjob,datacanbetransportedparallelformultiplestorageservers.Ithasbeenprovedbycomprehensivetestthat,withtheuseoftheloadbalancingbasedontheHustBackupsystem,theservicedelayhasbeengreatlyreduced,andtheloadofthestorageservicecomestoabalancedstate,andtheresourceutilizationofthestorageservicehasbeengreatlyimproved.Theeffectofthisalgorithmforserverloadbalancingisquitesignificant,anditimprovedoverallsystemperformance,atthesametimeensuresthequalityofserviceprovided.Keywords:Databackupsystem，Loadbalancing，Clusteringtechnology目录