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Date: Tue, 21 Sep 2010 11:20:08 GMT
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To: freebsd-acpi@FreeBSD.org
From: Alexander Motin <mav@FreeBSD.org>
Cc: 
Subject: Re: i386/135447: [i386] [request] Intel Core i7 and Nehalem-EP new
 features not supported
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The following reply was made to PR i386/135447; it has been noted by GNATS.

From: Alexander Motin <mav@FreeBSD.org>
To: Dmitry Kubov <dk@garant.ru>
Cc: Andriy Gapon <avg@FreeBSD.org>, jh@FreeBSD.org, 
 bug-followup@FreeBSD.org
Subject: Re: i386/135447: [i386] [request] Intel Core i7 and Nehalem-EP new
 features not supported
Date: Tue, 21 Sep 2010 14:16:46 +0300

 Dmitry Kubov wrote:
 > Ok, I am able to activate C3 state after loader.conf tweaks. According
 > to http://www.intel.com/technology/turboboost/
 > 
 > Intel Turbo Boost Technology is activated when the Operating System (OS)
 > requests the highest processor performance state (P0).
 > 
 > I have no clue about P0 state activation on FreeBSD.
 
 P0 is just a highest available CPU frequency. If you are not using
 powerd - it should be set all the time. If you are using powerd - it
 will set it in part of second after load appear.
 
 -- 
 Alexander Motin