Title :
PowerScope: a tool for profiling the energy usage of mobile applications
Author :
Flinn, Jason ; Satyanarayanan, M.
Author_Institution :
Sch. of Comput. Sci., Carnegie Mellon Univ., Pittsburgh, PA, USA
Abstract :
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%
Keywords :
energy measurement; mobile computing; operating system kernels; performance evaluation; power supplies to apparatus; PowerScope; adaptive video playing application; energy consumption; energy usage; energy usage profiling; hardware instrumentation; kernel software support; mobile applications; postprocessing software; program structure; statistical sampling; system activity; Application software; Current measurement; Energy consumption; Hardware; Instruments; Kernel; Performance evaluation; Sampling methods; Software measurement; Software performance;
Conference_Titel :
Mobile Computing Systems and Applications, 1999. Proceedings. WMCSA '99. Second IEEE Workshop on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7695-0025-0
DOI :
10.1109/MCSA.1999.749272
