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ID:46221297
大小:468.03 KB
页数:53页
时间:2019-11-21
《软件即服务云平台性能与能耗的平衡优化策略分析》由会员上传分享,免费在线阅读,更多相关内容在工程资料-天天文库。
1、AbstractWithrapiddevelopmentandwidespreadapplicationsofcloudcomputingoverrecentyears,notonlythequantitybutalsothescaleofdatacentersworldwidehaveincreaseddra・matically.However,thisalsoincursskyrocketingpowerconsumptionsofsuchlarge-scaledatacenters,whichconsistofmassivefarmsofserversa
2、ndabundantcomputingavailability.Undertheglobalcontextofsevereenergystarvationandadverseenvironmentalimpact,theissueofhowtobalancethepower-performancetradeoff'ofdatacentershostingdiverseapplicationshasdrawnsubstantialattentionfromgovernments,industriesaswellasacademia.Ananalyticalfr
3、ameworkispresentedforcharacterizingandoptimizingthepowerperformancetradeoff'inSoftware-as-a-Service(SaaS)cloudplatfonns.Theobjectivesaretwo-fold:(1)MaximizingtheoperatingrevenuewhenservingheterogeneousSaaSapplicationswithunpredictableuserrequests,and(2)Minimizingthepowerconsumptio
4、nwhenprocessinguserrequests.Toachievetheseobjectives,aunifiedprofit-maximizingobjectiveisconstructedtojointlyconsiderrevenueandcostinaneconomicview.Anofflinesolutiontomaximizethesupremeboundoftheobjectiveisfirstdeveloped,inorderto(1)justifythevalidityofourtheoreticalmodel,and(2)esta
5、blishabenchmarktoexaminetheeffective-nessofothercontrolsolutions.Asahighlightofourcontributions,wetakeadvantageofLyapunovOptimizationtechniquestodesignandanalyzeanoptimalyetpracticalcontrolframework,whichmakesonlinedecisionsonrequestadmissioncontrol,routing,andvirtualmachine(VMs)sch
6、eduling・Theproposedonlinecontrolframeworkcanbeextendedtoaccommodateavarietyofdesignchoicesandoperationalrequirementsinadatacenter.Specifically,bufferingfacilitiescanbeintroducedtoalleviatetheburstyadmittedrequestsandtoimprovetherobustnessofthesystem,andapowerbudgetcanbeenforcedtoimp
7、rovethedatacenterperformance(dollar)perwatt.Mathematicalanalysesandsimulationshavedemonstratedboththeoptimality(intermsofacost-effectivepower-performancetradeoff)andsystemstability(intermsofrobustnessandadaptivitytotime-varyingandburstyuserrequests)achievedbytheproposedcontrolframew
8、ork・Keywords:SaaSCl
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