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X6800 Server Node iBMC (V300 or Later) User Guide 07

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Energy Saving Settings

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.

Figure 3-16 Energy Saving Settings page

Parameter Description

Table 3-35 Parameters in the Power Adjustment section

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:

If the actual server power exceeds the power cap value after the P-state and T-state are adjusted, the P-state and T-state values will be automatically adjusted to the normal values.

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:

If the actual server power exceeds the power cap value after the P-state and T-state are adjusted, the P-state and T-state values will be automatically adjusted to the normal values.

Procedure

Configuring CPU Energy Saving Policy

  1. On the menu bar, choose Power.
  2. In the navigation tree, choose Energy Saving Settings.

    The Energy Saving Settings page is displayed.

  3. Drag the slider bar to adjust the CPU operating frequency or duty cycle.

    For details about the parameters, see Table 3-35.

    NOTE:
    • 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.
  4. Click Save.

    The following information is displayed:

    Are you sure you want to perform this operation?
  5. Click Yes.

    If "Operation Successful" is displayed, the setting is complete.

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Updated: 2019-02-28

Document ID: EDOC1100019360

Views: 78021

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