Method and system for holistic energy management in ethernet networks

• US 9,007,971 B2
• Filed: 03/29/2011
• Issued: 04/14/2015
• Est. Priority Date: 03/23/2007
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Elzur, Uri, Powell, Scott
• Primary Examiner(s): Phillips, Hassan
• Assistant Examiner(s): FOUD, HICHAM B
• Application Number:
  US13/075,077
• Publication Number:
  US 20110176447A1
• Time in Patent Office: 1,477 Days
• Field of Search: None
• US Class Current: 370/311
• CPC Class Codes: H04L 12/12 Arrangements for remote connection or disconnection of substations or of equipment thereof
• CPC Class Codes: Y02D 30/50 in wire-line communication networks, e.g. low power modes or reduced link rate

Abstract

Aspects of a method and system for energy management are provided. In one embodiment based on expected activity in one or more nodes in a network, processing capabilities in the network may be matched with expected processing loads. Processing loads in a network node may be determined based on deep packet inspection of traffic transmitted/received by the node, inspection of data exchanged between subsystems in the node, a state of an operating system running in the node, data processed or waiting to be processed in the node, information exchanged between an energy management entity in the node and an energy management entity in one or more other nodes, computing tasks delegated to the node, and/or instructions transmitted along with a computing task delegated to the node.

Claims

1. A method comprising:

assessing, by management circuitry of a network device, a role of said network device in a network;

determining, by said management circuitry, an expected processing load of a network subsystem of said network device based on data transmitted and received by the network device and based on data exchanged between a host subsystem and the network subsystem of the network device; and

instructing, by said management circuitry, an operating system of said network device to increase or decrease a processing capability of said network device based on said expected processing load of said network subsystem, by notifying the operating system to increase a frequency of a clock in the host subsystem when a higher processing load on the network subsystem is expected, and notifying the operating system to decrease the frequency of the clock in the host subsystem when a lower processing load on the network subsystem is expected.

2. The method according to claim 1,

wherein determining said expected processing load further comprises inspecting ingress and egress of network transactions to determine said expected processing load.

3. The method according to claim 1, further comprising:

receiving processing load information from other network devices communicatively coupled to said network device; and

coordinating management circuitry of other network devices based on the processing load information.

4. The method according to claim 1, wherein determining said expected processing load further comprises performing deep packet inspection on traffic received via said networking subsystem.

5. The method according to claim 1, further comprising controlling a state of said operating system according to a service level agreement by which said network device is bound.

6. The method according to claim 1, wherein said network device comprises a dedicated energy management entity for performing said determining and said instructing.

7. The method according to claim 1, further comprising communicating said expected processing load to other network devices communicatively coupled to said network device.

8. The method according to claim 1, further comprising controlling a state of one or more applications running on said network device such that said processing capability of said network device corresponds to said expected processing load of said network subsystem.

9. The method according claim 1, wherein instructing said operating system comprises at least one of enabling or disabling at least a portion of said operating system.

10. The method according to claim 1, wherein assessing said role of said network device comprises inspecting definition files of said network device.

11. The method according to claim 1, wherein assessing said role of said network device comprises inspecting definition files of said network device to determine whether said network device is subject to virtualization.

12. The method according to claim 11, further comprising, when said network device is subject to virtualization, said assessing said role of said network device further comprises determining a state of at least one virtual machine running on said network device.

13. The method according to claim 11, further comprising, when said network device is subject to virtualization, said assessing said role of said network device further comprises determining a state of each of a plurality of virtual machines running on said network device.

14. The method according to claim 1, further comprising:

accounting for an amount of time to transition said network device back to a higher processing capability, wherein;

instructing said operating system further comprises instructing said operating system to match said processing capability based on said amount of time.

15. The method according to claim 1, further comprising:

negotiating a capability of said network device with a management entity based on said expected processing load of said network device, said capability of said network device comprising at least one of a processing rate of said network device, an amount of power supplied to said network device, or a data rate at which said network device may communicate, wherein;

instructing said operating system further comprises instructing said operating system according to said negotiating.

16. A system comprising:

a host of a network device; and

a networking subsystem of said network device, said networking subsystem configured to;

assess a role of said network device in a network;

determine an expected processing load of said networking subsystem based on data transmitted and received by the network device and based on data exchanged between the host and the networking subsystem; and

instruct an operating system of said network device to increase or decrease a processing capability of said network device based on said expected processing load of said network subsystem, by notifying the operating system to increase a frequency of a clock in the host when a higher processing load on the network subsystem is expected, and notifying the operating system to decrease the frequency of the clock in the host when a lower processing load on the network subsystem is expected.

17. The system according to claim 16, wherein said networking subsystem is further configured to inspect ingress and egress of network transactions to determine said expected processing load.

18. The system according to claim 16, wherein said networking subsystem is further configured to:

receive processing load information from other network devices communicatively coupled to said network device; and

coordinate other network devices based on the processing load information.

19. The system according to claim 16, wherein said networking subsystem is further configured to perform deep packet inspection on traffic received via said networking subsystem.

20. The system according to claim 16, wherein said networking subsystem is further configured to control a state of said operating system according to a service level agreement by which said network device is bound.

21. The system according to claim 16, wherein said network device further comprises a dedicated energy management entity configured to determine said expected processing load and instruct said operating system.

22. The system according to claim 16, wherein said networking subsystem is further configured to communicate said expected processing load to other network devices communicatively coupled to said network device.

23. The system according to claim 16, wherein said networking subsystem is further configured to control a state of one or more applications running on said network device such that a processing capability of said network device corresponds to said expected processing load of said network subsystem.

24. The system according claim 16, wherein said networking subsystem is further configured to control a state of said operating system to enable certain portions of said operating system.

25. A method comprising:

assessing, by management circuitry, a role of a network device in a network;

determining, by said management circuitry, an expected processing load of a network subsystem of said network device based on data transmitted and received by the network device and based on data exchanged between a host subsystem and the network subsystem of the network device;

instructing, by said management circuitry, an operating system of said network device to increase or decrease a processing capability of said network device based on said expected processing load of said network subsystem, by notifying the operating system to increase a frequency of a clock in the host subsystem when a higher processing load on the network subsystem is expected, and notifying the operating system to decrease the frequency of the clock in the host subsystem when a lower processing load on the network subsystem is expected; and

coordinating management circuitry of other network devices based on said expected processing load.

26. The method according to claim 25, wherein determining said expected processing load further comprises inspecting ingress and egress of network transactions between said network subsystem and a host subsystem of said network device, to determine said expected processing load.