Mobile Multicores: Use Them or Waste Them

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Carroll, Aaron; Heiser, Gernot

Carroll, Aaron; Heiser, Gernot


2013-11-03


Conference Material


5th Workshop on Power-Aware Computing and Systems (HotPower'13)


Farmington, PA, USA


5


Energy management is a primary consideration in the design of modern smartphones, made more interesting by the recent proliferation of multi-core processors in this space. We investigate how core offlining and DVFS can be used together on these systems to reduce energy consumption. We show that core offlining leads to very modest savings in the best circumstances, with a heavy penalty in others, and show the cause of this to be low per-core idle power. We develop a policy in Linux that exploits this fact, and show that is improves up to 25% on existing implementations.


http://sigops.org/sosp/sosp13/hotpower.html


nicta:7302


Carroll, Aaron; Heiser, Gernot. Mobile Multicores: Use Them or Waste Them. In: 5th Workshop on Power-Aware Computing and Systems (HotPower'13); Farmington, PA, USA. 2013-11-03. 5.



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