Date: Tue, 21 Sep 2010 11:20:08 GMT From: Alexander Motin <mav@FreeBSD.org> To: freebsd-acpi@FreeBSD.org Subject: Re: i386/135447: [i386] [request] Intel Core i7 and Nehalem-EP new features not supported Message-ID: <201009211120.o8LBK8Zf053111@freefall.freebsd.org>
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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
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