262 IBM eX5 Implementation Guide PooledThis option presents the additional memory in the MAX5 as a pool of memory withoutbeing assigned to any particular processor. Use this setting with Linux OSs.6.9.2 UEFI performance tuningTuning the x3850 X5 for performance is a complicated topic, because it depends on whichapplication you have installed or which workload this application generates. For example, adatabase server will generate a separate load on the hardware than a file and print server.In this section, we provide general settings for the x3850 X5 that can be a good starting pointfor performance tuning. For more detailed information about the best settings for your specificenvironment and application needs, contact your IBM Business Partner or IBMrepresentative.Table 6-9 gives general recommendations for the most common UEFI settings.Table 6-9 Overview of UEFI settingsSetting MaxImumperformanceVirtualizationb Low latency Performanceper wattHPCTurboMode a Enabled Enabled Disabled Disable DisabledTurboBoost Traditional Power Optimized AutomaticallydisabledAutomaticallydisabledAutomaticallydisabledProcessorPerformancestatesEnabled Enabled Disabled Enabled DisabledC states Disabled Enabled Disabled Enabled EnabledC1E state Disabled Enabled Disabled Enabled EnabledPrefetcher Enabled Enabled Enabled Enabled EnabledHyper-ThreadingEnabled Enabled Disabled Enabled EnabledExecuteDisableDisabled Enabled Disabled Enabled DisabledVirtualizationExtensionsDisabled Enabled Disabled Enabled DisabledQPI Link Speed Max Performance Max Performance Max Performance Power Efficiency MaxPerformanceIMM ThermalModePerformance Performance Performance Normal PerformanceCKE Policy Disabled Disabled Disabled Disabled DisabledDDR Speed Max Performance Max Performance Max Performance Max Performance MaxPerformancePage Policy Closed Closed Closed Closed ClosedMapper Policy Closed Closed Closed Closed ClosedPatrol Scrub Disabled Disabled Disabled Disabled Disabled
