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PoliSave: Efficient power management of Campus PCs

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2 Author(s)
Luca Chiaraviglio ; Politecnico di Torino, Corso Duca degli Abruzzi 24, Italy ; Marco Mellia

In this paper we study the power consumption of networked devices in a large Campus network, focusing mainly on PC usage. We first define a methodology to monitor host power state, which we then apply to our Campus network. Results show that typically people refrain from turning off their PC during non-working hours so that more than 1500 PCs are always powered on, causing a large energy waste. We then design PoliSave, a simple web-based architecture which allows users to schedule power state of their PCs, avoiding the frustration of wasting long power-down and bootstrap times of today PCs. By exploiting already available technologies like Wake-On-Lan, Hibernation and Web services, PoliSave reduces the average PC uptime from 15.9h to 9.7h during working days, generating an energy saving of 0.6kW/h per PC per day, or a saving of more than 250,000 Euros per year considering our Campus University.

Published in:

Software, Telecommunications and Computer Networks (SoftCOM), 2010 International Conference on

Date of Conference:

23-25 Sept. 2010