PowerScope: A Tool for Profiling the Energy Usage of Mobile Applications (1999)
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BibTeX
@MISC{Flinn99powerscope:a,
author = {Jason Flinn and M. Satyanarayanan},
title = {PowerScope: A Tool for Profiling the Energy Usage of Mobile Applications},
year = {1999}
}
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Abstract
In this paper, we describe the design and implementation of PowerScope, a tool for profiling energy usage by applications. PowerScope maps energy consumption to program structure, in much the same way that CPU profilers map processor cycles to specific processes and procedures. Our approach combines hardware instrumentation to measure current level with kernel software support to perform statistical sampling of system activity. Postprocessing software maps the sample data to program structure and produces a profile of energy usage by process and procedure. Using PowerScope, we have been able to reduce the energy consumption of an adaptive video playing application by 46%. 1. Introduction Energy is a critical resource for mobile computers [5, 8]. In spite of many improvements in low-power hardware design and battery life, there is now growing awareness that a strategically viable approach to energy management must include higher levels of the system [2]. For example, a network applica...
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