System and method for adapting a power usage of a server during a data center cooling failure
A device comprising a temperature measurement module, a performance state module, and a fan speed module. The temperature measurement module is configured to determine a temperature in a server, and to output a first control signal when temperature in the server is above a threshold. The performance state module is configured to change a performance state of the device to a lowest system performance state in response to the first control signal, and further configured to reduce a processor power consumption and a subsystem power consumption to a minimum power level in response to reducing the performance state to the lowest system performance state. The fan speed module is configured to reduce a fan speed to a minimum fan speed level based on the first control signal.
1. A device comprising:
a temperature measurement module configured to determine a temperature in a server, to output a first control signal when the temperature in the server is above a threshold temperature, to output a second control signal when the temperature in the server in below the threshold temperature, and to output a third control signal when the temperature in the server is continuing to increase above the threshold temperature;
a performance state module in communication with the temperature measurement module, the performance state module configured to change a performance state of the device to a lowest system performance state in response to the first control signal, and further configured to reduce a processor power consumption and a subsystem power consumption to a minimum power level in response to reducing the performance state to the lowest system performance state; and
a fan speed module in communication with the temperature measurement module, the fan speed module configured to reduce a fan speed level based on the first control signal, and to gradually reduce, in response to the third control signal, the fan speed proportionally to an amount that the temperature has increased above the threshold temperature until the fan speed is at the minimum fan speed level.
2. The device of claim 1 further comprising:
a memory bandwidth module in communication with the temperature measurement module, the memory bandwidth module configured to reduce a memory bandwidth to a minimum bandwidth level based on the first control signal.
3. The device of claim 2 wherein the memory bandwidth module is further configured to increase the memory bandwidth to an amount prior to the temperature being above the threshold temperature in response to the second control signal.
4. The device of claim 1 wherein the performance state module is further configured to reset the performance state of the device to a level prior to the temperature being above the threshold temperature in response to the second control signal, and to increase the processor power consumption and the subsystem power consumption to an amount prior to the temperature being above the threshold temperature in response to the second control signal.
5. The device of claim 1 wherein the fan speed module is further configured to increase the fan speed to a level prior to the temperature being above the threshold temperature in response to the second control signal.
6. A method comprising:
detecting that a temperature in a server is above a threshold temperature level;
changing the server to a lowest system performance state when the temperature in the server is above the threshold temperature level;
reducing a processor power consumption and a subsystem power consumption to a minimum power level when the server changes to the lowest system performance state;
reducing a memory bandwidth to a minimum bandwidth level when the temperature is above the threshold temperature level;
reducing a fan speed level when the temperature is above the threshold temperature level;
detecting that the temperature in the server is continuing to increase above the threshold temperature level; and
gradually reducing the fan speed proportionally to an amount that the temperature is above the threshold temperature level until the fan speed is at the minimum fan speed level.
7. The method of claim 6 further comprising:
detecting that the temperature is below the threshold temperature level;
resetting a system performance state to a level prior to the temperature being above the threshold temperature level when the temperature is below the threshold temperature level; and
increasing the processor power consumption and the subsystem power consumption to an amount prior to the temperature being above the threshold temperature level when the temperature is below the threshold temperature level.
8. The method of claim 6 further comprising:
detecting that the temperature is below the threshold temperature level; and
increasing the memory bandwidth to an amount prior to the temperature being above the threshold temperature level when the temperature is below the threshold temperature level.
9. The method of claim 6 further comprising:
detecting that the temperature is below the threshold temperature level; and
increasing the fan speed to an level prior to the temperature being above the threshold temperature level when the temperature is below the threshold temperature level.
10. The method of claim 6 wherein the temperature being above the threshold temperature level indicates a data center cooling failure.
11. The method of claim 6 wherein reducing the fan speed further comprises:
gradually reducing the fan speed proportionally to an amount that the temperature is above the threshold temperature level until the fan speed is at the minimum fan speed level.
12. The method of claim 6 further comprising:
increasing a length of time before the server powers down during a data center cooling failure when the server changes to the lower system performance state, reduces the memory bandwidth, and reduces the fan speed.
13. A method comprising:
detecting that a temperature in a server is above a threshold temperature;
changing the server to a lowest system performance state when the temperature in the server is above the threshold temperature;
reducing a processor power consumption and a subsystem power consumption to a minimum power level when the server changes to the lowest system performance state;
detecting that the temperature in the server is continuing to increase above the threshold temperature level; and
gradually reducing the fan speed proportionally to an amount that the temperature has increased above the threshold temperature until the fan speed is at the minimum fan speed level.
14. The method of claim 13 further comprising:
detecting that the temperature is below the threshold temperature;
resetting a system performance state to a level prior to the temperature being above the threshold temperature when the temperature is below the threshold temperature; and
increasing the processor power consumption and the subsystem power consumption to an amount prior to the temperature being above the threshold temperature when the temperature is below the threshold temperature.
15. The method of claim 13 further comprising:
reducing a memory bandwidth to a minimum bandwidth level when the temperature is above the threshold temperature.
16. The method of claim 15 further comprising:
detecting that the temperature is below the threshold temperature; and
increasing the memory bandwidth to an amount prior to the temperature being above the threshold temperature when the temperature is below the threshold temperature.
17. The method of claim 13 further comprising:
reducing a fan speed to a minimum fan speed level when the temperature is above the threshold temperature.
18. The method of claim 17 further comprising:
detecting that the temperature is below the threshold temperature; and
increasing the fan speed to an level prior to the temperature being above the threshold temperature when the temperature is below the threshold temperature.
19. The method of claim 13 further comprising:
increasing a length of time before the server powers down during a data center cooling failure when the server changes to the lower system performance state, reduces the memory bandwidth, and reduces the fan speed.