i386/135447: [i386] [request] Intel Core i7 and Nehalem-EP new
features not supported
Alexander Motin
mav at FreeBSD.org
Tue Sep 21 11:20:09 UTC 2010
The following reply was made to PR i386/135447; it has been noted by GNATS.
From: Alexander Motin <mav at FreeBSD.org>
To: Dmitry Kubov <dk at garant.ru>
Cc: Andriy Gapon <avg at FreeBSD.org>, jh at FreeBSD.org,
bug-followup at 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
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