Power management system and method

• US 20070245161A1
• Filed: 04/15/2006
• Published: 10/18/2007
• Est. Priority Date: 04/15/2006
• Status: Active Grant

• Current Assignee: Hewlett Packard Enterprise Development LP (Hewlett-Packard Enterprise Company)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Shaw, Mark, Belady, Christian
• Granted Patent: US 7,539,881 B2
• Time in Patent Office: Days
• US Class Current: 713/300
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode

Abstract

A system has a plurality of electronic components that are powered by a power source, and each of the components is associated with a respective power cap. The system further has logic configured to monitor power consumption of the electronic components over a duration and dynamically adjust at least one power cap associated with at least one of the electronic components based on the monitored power consumption.

Claims

1. A system, comprising:

a plurality of electronic components powered by a power source, each of the components associated with a respective power cap; and

logic configured to monitor power consumption of the electronic components over a duration and dynamically adjust at least one power cap associated with at least one of the electronic components based on the monitored power consumption.

2. The system of claim 1, wherein the logic is further configured to transmit a signal to the at least one electronic component if the monitored power consumption deviates from the at least one power cap over the duration, the at least one electronic component configured to modify its operation based upon the signal received.

3. The system of claim 2, wherein the logic is further configured to request, from a controller of the at least one electronic component, a plurality of current values during the monitored duration.

4. The system of claim 1, wherein the logic is further configured to determine a value indicative of how often power consumed by the at least one electronic component is within a predetermined range.

5. The system of claim 4, wherein the logic is further configured to increase the power cap of one component if the value indicates that the consumed power consumed by the at least on e electronic component exceeds the predetermined range at least a predetermined percentage of the duration.

6. The system of claim 5, wherein the logic is further configured to decrease the power cap of another one of the plurality of components in response to an increase of the power cap associated with the at least one component.

7. The system of claim 1, further comprising a controller configured to transmit, to the logic, data indicative of current values associated with the at least one electronic component.

8. The system of claim 1, wherein the logic is configured to increase the at least one power cap if the power consumed by the at least one electronic component over the monitored duration exceeds the at least one power cap at least a predetermined percentage of the duration.

9. The system of claim 1, wherein the logic is configured to decrease the at least one power cap if the power consumed by the at least one electronic component over the monitored duration falls below the at least one power cap at least a predetermined percentage of the duration.

10. A method, comprising:

monitoring power consumption of a plurality of electronic components over a duration; and

dynamically adjusting a power cap associated with at least one of the electronic components based on the monitored power consumption.

11. The method of claim 10, further comprising the steps of:

increasing the power cap associated with one of the plurality of electronic components in response to an increase in power consumption by the one electronic component; and

decreasing another power cap associated with another one of the plurality of electronic components so that a specified overall power limit for the system is not violated due to the logic increasing the power cap.

12. The method of claim 10, further comprising:

transmitting a signal to the at least one electronic component if the monitored power consumption deviates from the power cap; and

modifying operation of the at least one electronic component based upon the signal.

13. The method of claim 10, further comprising determining a value indicative of how often power consumed by the at least one electronic component exceeds a predetermined range.

14. The method of claim 13, further comprising increasing the power cap if the value indicates that the power consumed by the at least one electronic component is within the predetermined range at least a predetermined percentage of the duration.

15. The method of claim 14, further comprising decreasing the power cap if the value indicates that the power consumed by the at least one electronic component is within the predetermined range at least a predetermined percentage of the duration.

16. The method of claim 10, further comprising increasing the power cap if the power consumed at least one electronic component over the monitored duration exceeds the power cap a predetermined percentage of the duration.

17. The method of claim 10, further comprising decreasing the power cap if the power consumed at least one electronic component over the monitored duration substantially falls below the power cap a predetermined percentage of the duration.

18. A system, comprising:

a first electronic component powered by a power source and associated with a first power cap;

a second electronic component powered by a power source and associated with a second power cap; and

logic configured to dynamically monitor power consumption of the first and second components, the logic further configured to increase the first power cap in response to an increase in power consumption by the first electronic component and to decrease the second power cap so that a specified overall power limit for the system is not violated due to the logic increasing the first power cap.

19. The system of claim 18, wherein the logic is further configured to determine values indicative of how often power consumed by the first and second electronic components is within a predetermined range.

20. The system of claim 19, wherein the logic is further configured to increase the first or second power cap if one of the values exceeds a threshold value.