APPARATUS AND METHOD FOR CONTROLLING POWER CONSUMPTION OF DEVICES PERFORMING COMMUNICATIONS BETWEEN A PROCESSOR AND I/O DEVICES

• US 20150277531A1
• Filed: 02/25/2015
• Published: 10/01/2015
• Est. Priority Date: 03/31/2014
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: WAKUDA, Rinko
• Granted Patent: US 9,639,142 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 1/3278 Power saving in modem or I/O interface
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

An information processing apparatus is connected to a plurality of input/output devices. The information processing apparatus includes an arithmetic processing device configured to perform a computation, and a plurality of communication devices each configured to perform a communication between the plurality of input/output devices and the arithmetic processing device. The information processing apparatus further includes a determination unit configured to determine a communication device whose power consumption is controllable, among the plurality of communication devices, and a managing unit configured to suppress power consumption of the communication device determined by the determination unit.

Claims

1. An information processing apparatus connected to a plurality of input/output devices, the information processing apparatus comprising:

an arithmetic processing device configured to perform a computation;

a plurality of communication devices each configured to perform a communication between the plurality of input/output devices and the arithmetic processing device;

a determination unit configured to determine a communication device whose power consumption is controllable, among the plurality of communication devices; and

a managing unit configured to suppress power consumption of the communication device determined by the determination unit.

2. The information processing apparatus of claim 1, wherein

the determination unit determines a communication device whose power consumption is controllable, based on an error occurring in any one of the plurality of communication devices or an error occurring in the plurality of input/output devices.

3. The information processing apparatus of claim 1, wherein

when an input/output device which is connected to any one of the plurality of communication devices is not recognized, the determination unit determines a communication device whose power consumption is controllable.

4. The information processing apparatus of claims 1, wherein

the managing unit stops a power source of a communication device that has capacity to stop a power source thereof, among the communication devices determined by the determination unit.

5. A managing device used for an information processing apparatus that is connected to a plurality of input/output devices and includes an arithmetic processing device configured to perform a computation and a plurality of communication devices each configured to perform a communication between the plurality of input/output devices and the arithmetic processing device, the managing device comprising:

a determination unit configured to determine a range where power consumption is controllable, among the plurality of communication devices; and

a managing unit configured to control power consumption of the communication device determined by the determination unit.

6. A control method of an information processing apparatus that is connected to a plurality of input/output devices and includes an arithmetic processing device configured to perform a computation and a plurality of communication devices each configured to perform a communication between the plurality of input/output devices and the arithmetic processing device, the control method comprising:

determining, by a determination unit of the information processing apparatus, a communication device whose power consumption is controllable, among the plurality of communication devices; and

suppressing, by a managing unit of the information processing apparatus, power consumption of the determined communication device.

7. A non-transitory, computer-readable recording medium having stored therein a control program for causing a computer included in an information processing apparatus to execute a process, the information processing apparatus being connected to a plurality of input/output devices and including an arithmetic processing device configured to perform a computation and a plurality of communication devices each configured to perform a communication between the plurality of input/output devices and the arithmetic processing device, the process comprising:

causing a determination unit of the information processing apparatus to determine a communication device whose power consumption is controllable, among the plurality of communication devices; and

causing a managing unit of the information processing apparatus to suppress the power consumption of the determined communication device.