资源描述：
《symphony an integrated multimedia file system》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、Symphony:AnIntegratedMultimediaFileSystemPrashantJ.Shenoy,PawanGoyal,SriramS.Rao,andHarrickM.VinDistributedMultimediaComputingLaboratoryDepartmentofComputerSciences,UniversityofTexasatAustinTaylorHall2.124,Austin,Texas78712-1188,USAE-mail:fshenoy,pawa
2、ng,sriram,ving@cs.utexas.edu,Telephone:(512)471-9732,Fax:(512)471-8885URL:http://www.cs.utexas.edu/users/dmclABSTRACTAnintegratedmultimediafilesystemsupportsthestorageandretrievalofmultipledatatypes.Inthispaper,wefirstdiscussvariousdesignmethodologiesfor
3、buildingintegratedfilesystemsandexaminetheirtradeoffs.Wearguethat,toefficientlysupportthestorageandretrievalofheterogeneousdatatypes,anintegratedfilesystemshouldenablethecoexistenceofmultipledatatypespecifictechniques.WethendescribethedesignofSymphony–anin
4、tegratedfilesystemthatachievesthisobjective.SomeofthenovelfeaturesofSymphonyinclude:aQoS-awarediskschedulingalgorithm;supportfordatatypespecificplacement,failurerecovery,andcachingpolicies;andsupportforassigningdatatypespecificstructuretofiles.Wediscussthe
5、prototypeimplementationofSymphony,andpresentresultsofourpreliminaryexperimentalevaluation.Keywords:Multimediafilesystems,multimediaoperatingsystems,integratedfilesystems1.INTRODUCTIONRecentadvancesincompression,storage,andcommunicationtechnologieshaveres
6、ultedintheproliferationofapplicationsthatinvolvestoringandretrievingmultipledatatypessuchastext,audio,video,imagery,etc.(collectivelyreferredtoasmultimedia).Realizingsuchnextgenerationapplicationsrequiresthedevelopmentoffilesystemsthatcanefficientlymanag
7、ethestorageandretrievalofmultipledatatypes(referredtoasintegratedmultimediafilesystems).Mostexistingfilesystemshavebeenoptimizedforasingledatatype.Forinstance,conventionalfilesystemshavebeenoptimizedforthestorageandretrievaloftextualdata.1Sincethesefilesys
8、temsprovideonlyabest-effortservicetouserrequests,theyareill-suitedformeetingthereal-timeperformancerequirementsofaudioandvideodata(continuousmedia).Ontheotherhand,continuousmediaserversexploittheperiodicandsequentialnatureofcontinuousme
