Energy Saving Settings
Function Description
The Energy Saving Settings page allows you to adjust the P-states (CPU operating frequency) and T-states (CPU duty cycle) to reduce power consumption.
Energy saving settings may affect system performance. Exercise caution when configuring energy saving settings.
Before adjusting the server power, ensure that the following parameters are set on the BIOS:
- EIST Support or EIST is set to Enabled.
- ACPI 3.0 T-States is set to Enabled for a V2 server on the Romley platform.
- ACPI T-States is set to Enabled for a V3 server on the Brickland platform. (ACPI T-States is unavailable for a V3 server on the Grantley platform.)
- Software Controlled T-States is set to Enabled and T-State Throttle Level to the default value Disabled for a V5 server on the Purley platform.
GUI
Choose Power from the main menu, and select Energy Saving Settings from the navigation tree.
The Energy Saving Settings page is displayed.
The Energy Saving Settings area consists of two sections: Power Adjustment and PSU settings.
Parameter Description
Parameter |
Description |
---|---|
CPU Operating Frequency |
Drag the slider bar to adjust the CPU operating frequency (P-states). The number of P-states varies according to the CPU model. P0 is the maximum value. A larger P-state value indicates a lower CPU operating frequency, and thereby lower power consumption. NOTE:
|
CPU Duty Cycle |
Drag the slider bar to adjust the CPU duty cycle (T-states). The number of T-states varies according to the CPU model. T0 is the maximum value. A larger T-state value indicates a lower CPU duty cycle, and thereby lower power consumption. NOTE:
|
Parameter |
Description |
---|---|
Actual PSU Status |
|
System Power |
Current server power. |
PSU Power |
Current power of all power supply units (PSUs) in the server. |
Work Mode |
Current PSU working mode. |
Active PSU |
Active PSUs. NOTE:
If Work Mode is set to Load Balancing, all detected PSUs are displayed. |
Predicted PSU Status |
|
Work Mode |
PSU working mode. Value:
Default value: Load Balancing NOTE:
|
Active PSU |
Active PSUs. |
Hibernate |
NOTICE:
After deep hibernation is enabled and the server is powered off, if all active PSUs are removed or stop outputting power due to faults, the entire server loses power for about 10 seconds and then the PSUs in deep hibernation mode automatically turn on to output power. Specifies whether deep hibernation is enabled. If deep hibernation is enabled, certain PSUs enter the deep hibernation mode and stop outputting power when the server is powered off. When the server is powered on, the PSUs in deep hibernation mode continue to output power. Click
NOTE:
|
Procedure
Configuring CPU Energy Saving Policy
- On the menu bar, choose Power.
In the navigation tree, choose Energy Saving Settings.
The Energy Saving Settings page is displayed.
Drag the slider bar to adjust the CPU operating frequency or duty cycle.
For details about the parameters, see Table 3-37.
- Drag one slider bar at a time.
- Adjusting the maximum CPU operating frequency has greater impact on power consumption and smaller impact on system performance than adjusting the CPU duty cycle. Therefore, adjust the maximum CPU operating frequency first.
Click Save.
The following information is displayed:
Are you sure you want to perform this operation?
Click Yes.
If "Operation Successful" is displayed, the setting is complete.
Setting the PSU Working Mode (Unsupported by RH8100 V3)
- On the menu bar, choose Power.
In the navigation tree, choose Energy Saving Settings.
The Energy Saving Settings page is displayed.
- In the Predicted PSU Status area, set the PSU working mode and active PSU and whether to enable deep hibernation.
For details about the parameters, see Table 3-38.
- The deep hibernation setting is available only for the 1288H V5, 2288H V5, 2488 V5, 2488H V5, and 5885H V5 servers.
- If deep hibernation is enabled, the PSUs will be in hibernation after the OS is powered off.
- Click Save.
The following information is displayed:
Are you sure you want to perform this operation?
- Click Save.
If "Operation Successful" is displayed, the setting is complete.