Power - Lenovo ThinkSystem SD530 Manual

Table 9. Operating modes details (continued)
Power/Performance Bias
Platform Controlled Type
Page Policy
MONITOR/MWAIT
UPI Power Management

Power

Use this menu to configure power scheme options.
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ThinkSystem Server with Intel Xeon SP (1st, 2nd Gen) UEFI Manual
Power/Performance bias determines how aggressively
• Platform
the CPU will be power managed and placed into turbo.
Controlled
With [Platform Controlled], the system controls the
• OS Controlled
setting. Selecting [OS Controlled] allows the operating
system to control it. Not all OSes support this feature.
When a preset mode is selected, the low-level settings
are not changeable and will be grayed out. If user would
like to change the settings, please choose [Custom Mode]
in "Operating Mode" located under "System Setting"
submenu.
Platform Controlled is the default setting.
[Maximum Performance] allows the most aggressive use
• Maximum
of turbo and power management functions are disabled,
Performance
thereby increasing power consumption. [Minimal Power]
• Efficiency - Favor
disables turbo and maximizes the use of power
Performance
management features. When a preset mode is selected,
the low-level settings are not changeable and will be
• Minimal Power
grayed out. If user would like to change the settings,
please choose [Custom Mode] in "Operating Mode"
located under "System Setting" submenu.
Efficiency - Favor Performance is the default setting.
Adaptive Open Page Policy can improve performance for
• Adaptive
applications with a highly localized memory access
• Closed
pattern; Closed Page Policy can benefit applications that
access memory more randomly.
Closed is the default setting.
MONITOR/MWAIT instructions are used to engage C-
• Enable
states. Some operating systems will re-enable C-states
• Disable
even when they are disabled in setup. To prevent this,
disable MONNITOR/MWAIT, choose [Custom Mode] in
"Operating Mode" and [Disable] in "C-States" located
under "System Setting" submenu.
This item can be changed after the steps as below.
• 1. Operating Modes -> Custom
• 2. C-states -> Disable
Enable is the default setting.
N/A Select the desired power management level for the CPU
UPI interface. L1 saves the most power but has longer
latency compared to L0p or Disabled. When a preset
mode is selected, the low-level settings are not
changeable and will be grayed out. If user would like to
change the settings, please choose [Custom Mode] in
"Operating Mode" located under "System Setting"
submenu.