Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Autonomic Power Saving Alerts for an ACPI Operating Systems

IP.com Disclosure Number: IPCOM000018733D
Original Publication Date: 2003-Aug-04
Included in the Prior Art Database: 2003-Aug-04
Document File: 1 page(s) / 75K

Publishing Venue

IBM

Abstract

A method is disclosed that defines a process whereby autonomic power saving alerts for an ACPI operating system can be generated.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 52% of the total text.

Page 1 of 1

Autonomic Power Saving Alerts for an ACPI Operating Systems

Today's computers are continuing to consume more power. This additional power consumption will continue to cost customers money . To make matters worst, there are many commercially available screen savers which animate events on the screen. This animation will chew up CPU cycles which consumes additional power. This additional power consumption will cost the customer additional money, as well as reduce the life of the system. In a corporate environment, the problem can be magnified because it is difficult to control what screen savers are loaded onto the system. This disclosure will attempt to address this issue.

The SMI handler can be modified to measure the number of power on hours the system is at full power. By doing this, the code can effectively determine whether the system is drawing too much power over a period of time. If this is the case, an alert can be generated which can be used by an administrator to correct the problem.

The SMI handler needs to determine when a system is in low power and when it has left the low power state. This is handled by the following:

Leaving a low power state:

ACPI 2.0 Systems

The system calls the /_BFS upon leaving a low power state. The ACPI function can be used to inform the SMI handler that the system is leaving a low power state.

ACPI 1.0 Systems

The SMI handler can trap on accesses to the ACPI register space to determine whether the system is leaving a low power state.

Entering a...