SYSTEM AND METHOD FOR THROTTLING POWER IN ONE OR MORE INFORMATION HANDLING SYSTEMS

• US 20070271477A1
• Filed: 06/19/2007
• Published: 11/22/2007
• Est. Priority Date: 11/10/2003
• Status: Active Grant

• Current Assignee: Dell Products LP (Dell Technologies Inc.)
• Original Assignee: Dell Products LP (Dell Technologies Inc.)
• Inventors: Sauber, William, Brewer, James
• Granted Patent: US 7,827,421 B2
• Time in Patent Office: Days
• US Class Current: 713/324
• CPC Class Codes: G06F 1/3203 Power management, i.e. event-based initiation of a power-saving mode

Abstract

An information handling system includes support for dynamic power throttling. In one embodiment, an information handling system includes power level detection and power control modules. The power level detection module may monitor power consumption for the information handling system and may automatically transmit power level data to a power level manager, based on the monitored power consumption. The power control module may receive power control data from the power level manager. The power control module may also automatically adjust power consumption of the information handling system, in accordance with the power control data received from the power level manager. In another embodiment, an information handling system may include an interface and a power level manager. The power level manager may receive power information for computers via the interface, may automatically compute an adjusted power threshold setting, and may automatically transmit the adjusted power threshold setting to a computer.

Claims

1-28. -28. (canceled)

29. A method of controlling power consumption of a group of information handling systems that use a common power source, the method comprising:

storing an aggregate power limit for a group of information handling systems;

receiving individual power consumption levels from the information handling systems via a power line, the power line comprising a conductor that provides power from a shared circuit breaker to the information handling systems;

monitoring the individual power consumption levels;

automatically calculating an aggregate power consumption for the group of information handling systems, based on the individual power consumption levels;

automatically comparing the aggregate power consumption for the group of information handling systems to the aggregate power limit; and

based on the comparison between the aggregate power consumption and the aggregate power limit;

automatically selecting at least one information handling system among the group for power reduction; and

automatically communicating with the at least one selected information handling system to cause the at least one selected information handling system to reduce power consumption.

30. A method according to claim 29, wherein the operation of automatically communicating with the selected information handling system to cause the selected information handling system to reduce power consumption comprises:

communicating with the selected information handling system via a power line.

31. A method according to claim 29, wherein the operation of monitoring individual power consumption levels for the information handling systems comprises:

receiving power information reported from a power level detection module within each of the information handling systems.

32. A method according to claim 29, wherein the operation of monitoring individual power consumption levels for multiple information handling systems comprises:

receiving a slave power packet from at least one of the information handling systems, the slave power packet including a request for permission to modify power consumption.

33. A method according to claim 32, wherein the operation of automatically and dynamically determining whether the aggregate power consumption approaches the aggregate power limit comprises:

determining whether the request for permission to modify power consumption, if granted, would exceed the aggregate power limit.

34. A method of controlling power consumption of a group of information handling systems that use a common power source, the method comprising:

storing an aggregate power limit for a group of information handling systems;

monitoring individual power consumption levels for the information handling systems, including reading power information from at least one device in at least one of the information handling systems;

automatically calculating an aggregate power consumption for the group of information handling systems based on the individual power consumption levels;

automatically comparing the aggregate power consumption for the group of information handling systems to the aggregate power limit; and

based on the comparison between the aggregate power consumption and the aggregate power limit;

automatically selecting at least one information handling system among the group for power reduction; and

automatically communicating with the at least one selected information handling system to cause the at least one selected information handling system to reduce power consumption.

35. A method according to claim 34, wherein the operation of reading power information from at least one device within at least one of the information handling systems comprises:

obtaining extended display identification data from the device.

36. A method according to claim 34, wherein the operation of automatically communicating with the selected information handling system to cause the selected information handling system to reduce power consumption comprises:

communicating with the selected information handling system via a power line.

37. A method according to claim 34, wherein the operation of monitoring individual power consumption levels for the information handling systems comprises:

receiving power information reported from a power level detection module within each of the information handling systems.

38. A method according to claim 34, further comprising:

storing a power limit for at least one of the information handling systems in the at least one information handling system during a manufacturing process, before shipping the at least one information handling system to a customer.

39. A method according to claim 34, further comprising:

storing a power priority setting for at least one of the information handling systems in the at least one information handling system, during a manufacturing process, based on information provided by a customer, before shipping the at least one information handling system to the customer.

40. A method according to claim 34, wherein the operation of monitoring individual power consumption levels for multiple information handling systems comprises:

receiving a slave power packet from at least one of the information handling systems, the slave power packet including a request for permission to modify power consumption.

41. A method according to claim 40, wherein the operation of automatically and dynamically determining whether the aggregate power consumption approaches the aggregate power limit comprises:

determining whether the request for permission to modify power consumption, if granted, would exceed the aggregate power limit.

42. A method of controlling power consumption of a group of information handling systems that use a common power source, the method comprising:

storing an aggregate power limit for a group of information handling systems;

before shipping the information handling systems to a customer, storing individual power limits for the information handling systems in the information handling systems during a manufacturing process based on information regarding a deployment environment for the information handling systems;

before shipping the information handling systems to the customer, storing individual power priority settings for the information handling systems in the information handling system during a manufacturing process based on information regarding the deployment environment for the information handling systems;

monitoring individual power consumption levels for the information handling systems;

automatically calculating an aggregate power consumption for the group of information handling systems, based on the individual power consumption levels;

automatically comparing the aggregate power consumption for the group of information handling systems to the aggregate power limit; and

based on the comparison between the aggregate power consumption and the aggregate power limit;

automatically selecting at least one information handling system among the group for power reduction based on at least one of the stored individual power limits and the stored individual power priority settings; and

automatically communicating with the at least one selected information handling system to cause the at least one selected information handling system to reduce power consumption.

43. An information handling system with support for dynamic power throttling, the information handling system comprising:

a power level detection module operable to communicate with a power level manager; and

a power control module operable to communicate with the power level manager;

wherein the power level detection module monitors power consumption for the information handling system;

wherein the information handling system automatically transmits power level data to the power level manager, based on the monitored power consumption;

wherein the power control module receives power control data from the power level manager; and

wherein the power control module automatically adjusts power consumption of the information handling system, in accordance with the power control data received from the power level manager.

44. An information handling system according to claim 43, further comprising:

a power line data interface in communication with a power line; and

wherein the power control module receives the power control data from the power level manager via the power line data interface.

45. An information handling system according to claim 44, further comprising:

a power supply that converts alternating current from a source of electricity to direct current; and

wherein the power line data interface resides within the power supply.

46. An information handling system according to claim 43, wherein the power control data comprises a power threshold setting.

47. An information handling system according to claim 43, further comprising:

a power supply that converts alternating current to direct current; and

wherein the power level detection module resides within the power supply.

48. A method of supporting dynamic power throttling in an information handling system, the method comprising:

monitoring power consumption for an information handling system;

automatically transmitting power level data from the information handling system to a power level manager, based on the monitored power consumption;

receiving power control data from the power level manager at the information handling system; and

automatically adjusting power consumption of the information handling system in accordance with the power control data received from the power level manager by automatically adjusting at least one of;

the frequency of a clock for a central processing unit disposed in the information handling system; and

the frequency of a clock for a graphics processor disposed in the information handling system.