多核嵌入式系統(tǒng)的實(shí)時性研究.pdf

1、浙江大學(xué)碩士學(xué)位論文多核嵌入式系統(tǒng)的實(shí)時性研究姓名：趙懿申請學(xué)位級別：碩士專業(yè)：計(jì)算機(jī)系統(tǒng)結(jié)構(gòu)指導(dǎo)教師：陳天洲施青松20070501浙江大學(xué)碩上學(xué)位論文AbstractMulticoreProcessorcurrentlypopularinthe$elVfffanddesktopapplications，1Ⅳinsoonbewidelyusedinhighend鋤bcddedfieldT1lepreviousrealtimeembedd

2、edsystemsresearchfocusedonswitchingandtaskschedulingrealtimecommunicationsandfaulttolerancenotrelatetorealtimetaskitselfAndmultiprocessormor口concernedabouttheoptimizationofthroughputinthesystemratherthanarealtimeoptimiza

3、tionBasedontheanalysisofmultiprocessorcharacteristicsandrelatedworkathomeandabroadthisthesisresearchedtheresltimeproblembyrebuildingthereal—timetasksNowmultiprocessorscallsharethe2levelcacheandthispropertyisutilizedtofur

4、therimprovetheperformanceoftherealtimetasksTllisthesispresentstherealtimeimprovementschemeonmultiprocessorembeddedsystemwhichiscomposedbytaskparallelismandoperatingsystemsupportTaskparallelismproducesmultithreadbyme鋤offu

5、nctionaldecompositionanddatacompositionBycomparingtheperformancesbeforeandafterparallelismthisthesisconcludesthereasonabledecompositiontoimprovethereal—timepropertyofthetaskImprovementschemealsoincludes2levelcachebasedth

6、readallocationalgorithmwhichsupportstherealtimetaskatruntimeExperimentshaveprovedthattherealtimetasks黜highlyimprovedbythethesis’sdesignThetestingenvironmentisSimicasimulatorThekernelofamediaplayerisdividedintothreethread

7、sbyfunctionaldecompositionandgets1026％speedupQuicksortandmergesortaredividedintotwothreadsbydatadecompositionandget87％and92％speeduprespectivelyInthisthesisstestcase2levelcachebasedthreadallocationCanenhancetheperformance