Abstract

In tiffs paper, we examine the energy consumption era stateof -the-art pocket computer. UsLug a data acquisltion system, we measure the energy consumption of the ]tsy Pocket Computer, developed by Compaq Computer Corporation's Palp Alto Research Labs. We begin by showing that the energy usage characteristics of the Itsy differ markedly from that of a notebook computer. Then, since we expect that flexible software environments will become increasingly pre- valent on pocket computers, we consider applications running iu a Java environment. In particular, we explain some of the Java design tradeoffs applicable to pocket computers, and quantify their energy costs. For the design options we considered and the three workloads we studied, we find a maximum change in energy use of 25%.

Citations