Laptop Battery Usage Trace

This set of traces was compiled from January 2007 - onwards. The traces contains battery usage data for 60 laptops. Apart from battery-usage data, the traces also contain data on CPU utilization, disk space, and idle time for the laptop users.

• Documentation
• Trace format
• data_battery_ubicomp2007.tar.gz
• Publications:
  • “Users and Batteries : Interactions and Adaptive Power Management in Mobile Systems”, Nilanjan Banerjee, Ahmad Rahmati, Mark Corner, Sami Rollins, Lin Zhong. In Proceedings of Ubicomp 2007, Austria.

AC Power Traces

This set of traces was captured using a current sense resistor to record the power consumed by a desktop PC while loading a variety of websites. The sense resistor was wired in series with the AC power plug and the voltage drop across the resistor was sampled at a rate of 1kHz. Each file contains one website load. Each file is named for the website loaded, followed by a timestamp. There are 34 lines of header information followed by time series data in CSV format. The first column is a sample counter and the second is the voltage drop across the 0.1Ohm sense resistor. The current consumed by the PC can be calculated using Ohm’s Law (I = V/R) where R = 0.1Ohm.

• Data
• Publications:
  • “Executive Powers: Deanonymizing User Web Traffic via AC Power Analysis”, Shane S. Clark, Jacob Sorber, Kevin Fu, and Erik Learned-Miller. Tech report.