Linux Performance and Tuning Guidelines.pdf

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1、FrontcoverLinuxPerformanceandTuningGuidelinesOperatingsystemtuningmethodsPerformancemonitoringtoolsPerformanceanalysisEduardoCiliendoTakechikaKunimasaibm.com/redbooksRedpaperInternationalTechnicalSupportOrganizationLinuxPerformanceandTuningGuidelinesJuly2007REDP-4285-00Note:Beforeusingthi

2、sinformationandtheproductitsupports,readtheinformationin“Notices”onpagevii.FirstEdition(July2007)Thiseditionappliestokernel2.6Linuxdistributions.ThispaperwasupdatedonApril25,2008.©CopyrightInternationalBusinessMachinesCorporation2007.Allrightsreserved.NotetoU.S.GovernmentUsersRestrictedRi

3、ghts--Use,duplicationordisclosurerestrictedbyGSAADPScheduleContractwithIBMCorp.ContentsNotices.................................................................viiTrademarks.............................................................viiiPreface.............................................

4、....................ixHowthispaperisstructured..................................................ixTheteamthatwrotethispaper................................................xBecomeapublishedauthor..................................................xiCommentswelcome............................

5、............................xiiChapter1.UnderstandingtheLinuxoperatingsystem..........................11.1Linuxprocessmanagement..............................................21.1.1Whatisaprocess?.................................................21.1.2Lifecycleofaprocess....................

6、..........................31.1.3Thread...........................................................41.1.4Processpriorityandnicelevel........................................51.1.5Contextswitching..................................................51.1.6Interrupthandling........................

7、..........................61.1.7Processstate.....................................................61.1.8Processmemorysegments...........................................81.1.9LinuxCPUscheduler...............................................91.2Linuxmemoryarchitecture..