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RedHatEnterpriseLinux6电源管理指南在红帽企业版Linux6中管理电源消耗DonDomingoRüdigerLandmann电源管理指南RedHatEnterpriseLinux6电源管理指南在红帽企业版Linux6中管理电源消耗版1.0作者DonDomingo作者RüdigerLandmannr.landmann@redhat.comCopyright©2010RedHatInc..ThetextofandillustrationsinthisdocumentarelicensedbyRedHatunderaCreativeCommonsAttribution–ShareAlike3.0Unportedlicense(CC-BY-SA).AnexplanationofCC-BY-SAisavailableat,ifyoudistributethisdocumentoranadaptationofit,youmustprovidetheURLfortheoriginalversion.RedHat,asthelicensorofthisdocument,waivestherighttoenforce,andagreesnottoassert,Section4dofCC-BY-SAtothefullestextentpermittedbyapplicablelaw.RedHat,RedHatEnterpriseLinux,theShadowmanlogo,JBoss,MetaMatrix,Fedora,theInfinityLogo,andRHCEaretrademarksofRedHat,Inc.,registeredintheUnitedStatesandothercountries.Linux®istheregisteredtrademarkofLinusTorvaldsintheUnitedStatesandothercountries.Java®isaregisteredtrademarkofOracleand/oritsaffiliates.XFS®isatrademarkofSiliconGraphicsInternationalCorp.oritssubsidiariesintheUnitedStatesand/orothercountries.MySQL®isaregisteredtrademarkofMySQLABintheUnitedStates,theEuropeanUnionandothercountries.Allothertrademarksarethepropertyoftheirrespectiveowners.1801VarsityDriveRaleigh,NC27606-2072USAPhone:+19197543700Phone:8887334281Fax:+19197543701这个文档解释了如何在红帽企业版Linux6系统中有效管理您的电源消耗。下面的部分讨论了降低电源消耗的不同技术（服务器和笔记本电脑），以及每个技术对您系统总体性能的影响。iii前言v1.文档约定......................................................................................................................v1.1.排版约定............................................................................................................v1.2.抬升式引用约定.................................................................................................vi1.3.备注及警告.......................................................................................................vi2.获得帮助并提供反馈信息.............................................................................................vii2.1.您需要帮助吗？................................................................................................vii2.2.我们需要您的反馈！..........................................................................................vii1.概述11.1.电源管理的重要性......................................................................................................11.2.电源管理基础.............................................................................................................22.电源管理工具审核及分析52.1.审核及分析概述..........................................................................................................52.2.PowerTOP...................................................................................................................52.3.Diskdevstat和netdevstat..............................................................................................72.4.电池寿命工具组件（BatteryLifeToolKit）..................................................................92.5.Tuned和ktune........................................................................................................112.5.1.tuned.conf文件...............................................................................................112.5.2.Tuned-adm......................................................................................................132.6.DeviceKit-power和devkit-power................................................................................142.7.GNOME电源管理器.................................................................................................152.8.其他审核方法...........................................................................................................153.核心基础结构及技巧173.1.CPU闲置状态..........................................................................................................173.2.使用CPUfreq调节器...............................................................................................173.2.1.CPUfreq调节器类型.......................................................................................173.2.2.CPUfreq设置.................................................................................................183.2.3.调整CPUfreq策略和速度...............................................................................193.3.挂起和恢复...............................................................................................................203.4.无空循环内核...........................................................................................................203.5.主动式电源管理........................................................................................................203.6.主动连接电源管理.....................................................................................................213.7.Relatime驱动器访问优化.......................................