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1、RyanA.Sciampacone–SeniorSoftwareDeveloper05October2011GettingthemostoutofGenerationalGC1©2010IBMCorporationImportantDisclaimersTHEINFORMATIONCONTAINEDINTHISPRESENTATIONISPROVIDEDFORINFORMATIONALPURPOSESONLY.WHILSTEFFORTSWEREMADETOVERIFYTHECOMPLETENESSANDACC
2、URACYOFTHEINFORMATIONCONTAINEDINTHISPRESENTATION,ITISPROVIDED“ASIS”,WITHOUTWARRANTYOFANYKIND,EXPRESSORIMPLIED.ALLPERFORMANCEDATAINCLUDEDINTHISPRESENTATIONHAVEBEENGATHEREDINACONTROLLEDENVIRONMENT.YOUROWNTESTRESULTSMAYVARYBASEDONHARDWARE,SOFTWAREORINFRASTRUCT
3、UREDIFFERENCES.ALLDATAINCLUDEDINTHISPRESENTATIONAREMEANTTOBEUSEDONLYASAGUIDE.INADDITION,THEINFORMATIONCONTAINEDINTHISPRESENTATIONISBASEDONIBM’SCURRENTPRODUCTPLANSANDSTRATEGY,WHICHARESUBJECTTOCHANGEBYIBM,WITHOUTNOTICE.IBMANDITSAFFILIATEDCOMPANIESSHALLNOTBERE
4、SPONSIBLEFORANYDAMAGESARISINGOUTOFTHEUSEOF,OROTHERWISERELATEDTO,THISPRESENTATIONORANYOTHERDOCUMENTATION.NOTHINGCONTAINEDINTHISPRESENTATIONISINTENDEDTO,ORSHALLHAVETHEEFFECTOF:-CREATINGANYWARRANTORREPRESENTATIONFROMIBM,ITSAFFILIATEDCOMPANIESORITSORTHEIRSUPPLI
5、ERSAND/ORLICENSORS2©2011IBMCorporationIBMJavaTechnologyEditionVersion7.0■GeneralAvailability19thSeptember2011–Improvedthroughput–Fasterstartup–Smallerfootprint–IntroducesBalancedGC–SoftRealTimecapabilities–Improvedconsumability■Operatingsystems–AIX,Linux,z/
6、OS,Windows,Solaris■Platforms–Power,SystemZ,Intel,AMD,SPARC3©2011IBMCorporationIntroductiontothespeaker■14yearsexperiencedevelopinganddeployingJavaSDKs■Recentworkfocus:–Garbagecollection•Scalabilityimprovements•Pausetimereduction•AdvancedGCTechnology–VM•Perf
7、ormanceimprovements•Footprintreduction–ManagedRuntimeArchitecture■Mycontactinformation:–Ryan_Sciampacone@ca.ibm.com4©2011IBMCorporationOverviewWhatshouldyouwalkawayfromthistalkwith?AnunderstandingoftheIBMJDKGenerationalCollectormechanics,howtotunethecollect
8、orforbestbehavior,andhowtodistinguishbetweengenerationalandnon-generationalworkloads.©2010IBMCorporationInthebeginning...■Approachtocollection:Alloperationsaffecttheentireheap(ie:Global)GlobalCollectio
