Accession Number:

ADA446222

Title:

Powertap: System-Wide Power Management Through Power-Aware System Software And Hardware

Descriptive Note:

Final rept. 1 Jun 2002-31 Dec 2004

Corporate Author:

CARNEGIE-MELLON UNIV PITTSBURGH PA

Personal Author(s):

Report Date:

2005-08-01

Pagination or Media Count:

48.0

Abstract:

PowerTap is a power-aware system which achieves the best performance within a given power budget, or the best power efficiency under the constraints of each applications deadline in real-time applications. PowerTap dynamically monitors and adjusts power levels to meet application timing and system powerenergy demands. PowerTaps Power-Aware Real-Time Operating System PARTOS, is a morphable real-time operating system that manages power in the system hardware. PARTOS also manages power in the system software services and tunes system software computational requirements. PARTOS morphs to adapt its power management policies depending on the available power source battery, or AC. PowerTap uses the Power-Aware Resource Allocation Model PAQ-RAM to balance multiple applications quality of service requirements and to maximize the utility users satisfaction of the overall system. PAQ-RAM takes energy budget into account with other resources and adjusts the quality of service based on criticality and the amount of resources available.

Subject Categories:

  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE