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1、IssuesinUsingCommodityOperatingSystemsforTime-DependentTasks:ExperiencesfromaStudyofWindowsNTMichaelB.JonesJohnRegehrJuly,1998TechnicalReportMSR-TR-98-29MicrosoftResearchMicrosoftCorporationOneMicrosoftWayRedmond,WA98052PaperpublishedinProceedingsoftheEighthInternationalWorkshoponNetworkandOp
2、eratingSystemsSupportforDigitalAudioandVideo(NOSSDAV98),Cambridge,England,pages107-110,July1998.IssuesinUsingCommodityOperatingSystemsforTime-DependentTasks:ExperiencesfromaStudyofWindowsNTMichaelB.JonesJohnRegehr*MicrosoftResearch,MicrosoftCorporationDepartmentofComputerScience,ThorntonHallO
3、neMicrosoftWay,Building9s/1UniversityofVirginiaRedmond,WA98052,USACharlottesville,VA22903-2242,USAmbj@microsoft.comregehr@virginia.eduhttp://research.microsoft.com/~mbj/http://www.cs.virginia.edu/~jdr8d/AbstractunderstandboththeircapabilitiesandlimitationsforsuchThispaperpresentsasnapshotofea
4、rlyresultsfromaapplications.studyofWindowsNTaimedatunderstandingandWeareintheearlystagesofastudyofWindowsNTimprovingitslimitationswhenusedfortime-dependentaimedatunderstandingandimprovingitslimitationstasks,suchasthosethatariseforaudioandvideowhenusedfortime-dependenttasks.Clearlythereareproc
5、essing.timescalesforwhichitcanachieveeffectivelyperfectClearlytherearetimescalesforwhichitcanreliability,suchasfortheone-seconddeadlinespresentinachieveeffectivelyperfectreliability,suchastheone-theTigerVideoFilesystem[Boloskyetal.97].OtherseconddeadlinespresentintheTigerVideoFilesystem.times
6、cales,suchasreliablesub-millisecondschedulingofOthertimescales,suchasreliablesub-millisecondperiodictasks,areclearlyoutofreachwithoutresortingtoschedulingofperiodictasksinuserspace,areclearlyoutspecialtricks.Butthereisaninterestingrangeintheofreach.Yet,thereisaninterestingmiddlegroundmiddlewh
7、eretaskscanoftenbeexecuted,butnotalways.betweenthesetimescalesinwhichdeadlinesmaybemet,Manypracticalmultimediaactivities,suchasfine-grainedbutwillnotalwaysbe.Thisstudyfocusesonsystemandreal-timeaudiosynthesis,fallintothismiddlerange.applicati
