A Methodology to Measure the Environmental Impact of ICT Operating Systems across Different Device Platforms
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Abstract: A new methodology was created to measure the energy consumption and related green house gas (GHG) emissions of a computer operating system (OS) across different device platforms. The methodology involved the direct power measurement of devices under different activity states. In order to include all aspects of an OS, the methodology included measurements in various OS modes, whilst uniquely, also incorporating measurements when running an array of defined software activities, so as to include OS application management features. The methodology was demonstrated on a laptop and phone that could each run multiple OSs, results confirmed that OS can significantly impact the energy consumption of devices. In particular, the new versions of the Microsoft
Windows OS were tested and highlighted significant
differences between the OS versions on the same
hardware. The developed methodology could enable a
greater awareness of energy consumption, during both
the software development and software marketing
processes.