Intel英特尔指南：调试处理器重新排序缓冲区超时.pdf

WhitepaperProcessorReorder

AiBeeLim

SeniorPlatform4ppjicationEngineer

EmbeddedaComrmunicationsGroupBuffer(ROB)

PerormanceProductsDivision

TntelCorporationTImeout

JackRJohnson

SeniorPlatform4ppjfcationEn9ineer

EmbeddedCommunicatonsGroupDebugGuide

PerformanceProductsDivision

TIntelCorporation

October2010

DocumentNumber:324353

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Apstract

ThispaperprovidesanoverviewoftheProcessorReorderBuffertimeoutand

providesmethodologytodebugthesetypesofsystemissues.Usingthedebug

methodsanddebugtoolssuggestedinthisdocumentshouldhelpreducethe

timetodebugthesesystemissues.Theprocessistogathermoreinformation

aboutthefailureuntilthecauseisidentifiedandthenputpreventivestepsin

placetoeliminatethefailure，

2ProcessorReorderBuffer(ROB)TimeoutDebugGuide

1.0Introductigntt4

2.0ProcessorROBTimegut4

3.0MachineCheckStatuSs6

4.0CausesandExamples,te6

4.1OutstandingRead6

4.2OutstandingWrite,Nt7

5.0DebugTipsandTOglS7

一CR\

5,.2MachineCheckHandleree.7

5.2SomesignalsofinterestontheProcessor..8

5.3InTargetProbeTool(XDP/Arium),………，.9

5.4PCIExpressCompletionTimerTimegut.pp9

ooPCIexpressLogicAnalyzer二,,9

5.6BusLogicAnalyzer10

6.0ROBTimeoutEXampleste10

6.1ChipsetKnownBehaviorIsSsUe10

6.2ROBtimeoutduetoOutstandingRead.1

NormalOperatingCaseev,12

EndPointStopsResponding.…..13

CompletionTimeoutMechanismDisabledatRootPort