https://bugzilla.kernel.org/show_bug.cgi?id=23551
--- Comment #20 from Artem S. Tashkinov <t.ar...@mailcity.com> 2013-02-10
18:52:26 ---
(In reply to comment #19)
> I'll need code review and testing feedback before the patch will make it
> upstream. I can provide a standalone driver for testing if needed.
That would be great if it's not too much of a trouble for you.
(In reply to comment #18)
>
> No, you can't. It's only one of the many factors which determine how many
> power
> your CPU draws. And AFAIK CPU turbo frequency is only possible on one core
> when
> the other cores are idle, so the overall power draw isn't necessarily higher
> when turbo frequency is used.
Actually all CPU cores can be in a turbo boost mode simultaneously (especially
if your relax TDP restrictions and enable overclocking in your BIOS):
./turbostat
cor CPU %c0 GHz TSC %c1 %c3 %c6 %c7 %pc2 %pc3 %pc6
%pc7
82.82 3.43 3.31 3.96 1.39 11.82 0.00 0.00 0.00 0.00
0.00
0 0 86.16 3.43 3.31 0.38 0.00 13.45 0.00 0.00 0.00 0.00
0.00
1 1 75.23 3.43 3.31 7.42 2.93 14.42 0.00
2 2 79.84 3.44 3.31 7.12 2.46 10.57 0.00
3 3 90.06 3.44 3.31 0.92 0.17 8.84 0.00
Normal maximum for my CPU is 3.3GHz - so, 3.45Ghz obviously represents a turbo
mode.
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