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Date: Sat, 03 May 2014 18:07:29 -0700
From: Nathan Whitehorn <nwhitehorn@freebsd.org>
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To: Kevin Oberman <rkoberman@gmail.com>, 
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Subject: Re: Leaving the Desktop Market
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Cc: "current@freebsd.org" <current@freebsd.org>,
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On 05/03/14 16:59, Kevin Oberman wrote:
> On Sat, May 3, 2014 at 1:25 PM, Adrian Chadd <adrian@freebsd.org> wrote:
>
>> Set it to the lowest available Cx state that you see in dev.cpu.0 .
>>
>>
> Available is not required. Set it to C8. That guarantees that you will use
> the lowest available. The correct incantation in rc.conf is "Cmax".
> performance_cx_lowest="Cmax"
> economy_cx_lowest="Cmax"
>
> But, unless you want laggy performance, you will probably also want:
> hint.p4tcc.0.disabled=1
> hint.acpi_throttle.0.disabled=1
> in /boot/loader.conf. Low Cx states and TCC/throttling simply don't mix
> well and TCC is not effective, as mentioned earlier in this thread.

Is there any reason that TCC is on by default, actually? It seems like 
an anti-feature.
-Nathan