https://bugzilla.kernel.org/show_bug.cgi?id=23551





--- Comment #31 from Guenter Roeck <li...@roeck-us.net>  2013-02-25 08:23:35 ---
(In reply to comment #29)
> What do "Core power" and "Core energy" refer to, given that the CPU has 4
> cores? I would expect 4 entries of each, one per core.
> 
Unfortunately the CPU only reports one value for all cores combined, not per
CPU. You can see that clearly when the load is high.

> How can "Core energy" be more than "Pkg energy"?
> 
The initial energy reading starts with the current value in the registers. The
counter can wrap every 60 seconds, and the pkg and core counters wrap at
different times. This can result in the initially higher value for the core
energy.

> WRT laptop testing, I should receive a new laptop at work within one month and
> it is IvyBridge-based, so I can do some testing then.

Great. Thanks!

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