Measurement and modelling for the transition penalty and the effective sleep time interval for the dynamic power measurement of PCs

Authors:
Cheng-Hung Tsai;Ying-Wen Bai;Ming-Bo Lin;Yung-Sen Cheng
Affiliations:
National Taiwan University of Science and Technology, Taipei, Taiwan, ROC;Fu Jen Catholic University, Taipei, Taiwan, ROC;National Taiwan University of Science and Technology, Taipei, Taiwan, ROC;Fu Jen Catholic University, Taipei, Taiwan, ROC
Venue:
MIC '08 Proceedings of the 27th IASTED International Conference on Modelling, Identification and Control
Year:
2008

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Abstract

Low power consumption is an important factor in designing a PC system. Dynamic power management (DPM) can be an effective approach to the reduction of power consumption without significantly degrading performance. A system shuts down devices when they are not needed and wakes them up when necessary. When a system shuts down or wakes up, it requires more power consumption. In this paper we measure and model the power consumption during the state transition which causes the transition penalty. In our experiment results we measure the transition penalty with respect to the parameters of the systems. As a result of a great deal of measurement and observation the transition penalty can be represented by a mathematics model or a transition model. According to our model the transition penalty and the effective sleep time can be predicted for different PCs. With our transition model, the user can use the dynamic power management of a PC with respect to its parameters and the user's habits to reduce the power consumption.