Preserving Energy Resources Using an Android Kernel Extension: A Case Study

In this paper, we present our experience designing and testing anenergy saving strategy for mobile phones, implemented atoperating system level, using Android OS. Our approach was todeploy kernel extensions that assess the status of the device, andenable economic profiles without user intervention. Ourexperiments showed that the power management kernel extensionwas able to extend the battery runtime by 70% to 75%, at theexpense of impacting the experience of the user with an estimated performance degradation of 20% to 30%.