Re: [RFC PATCH 06/16] arm: topology: Define TC2 sched energy and provide it to scheduler

On Fri, Jun 06, 2014 at 02:13:05PM +0200, Ingo Molnar wrote:

Leakage current typically gets higher with higher frequencies, but 
it's also highly process dependent AFAIK.

In general, you can assume leakage power ~ V^2.

If switching power dissipation is the main factor in power use, then 
we can essentially assume that P ~ V^2, at the same frequency - and 
scales linearly with frequency - but real work performed also scales 
semi-linearly with frequency for many workloads, so that's an 
invariant for everything except highly memory bound workloads.

Agreed. Strictly, Energy ~ V^2.