Date: Sun, 02 Aug 2009 13:35:28 +0200 From: Harald Schmalzbauer <h.schmalzbauer@omnilan.de> To: Uwe Grohnwaldt <uwe@grohnwaldt.eu> Cc: current@freebsd.org Subject: Re: cpufreq on VIA C7 Message-ID: <4A757A00.3090903@omnilan.de> In-Reply-To: <4A7382EF.5050400@grohnwaldt.eu> References: <4A65E6EB.50308@grohnwaldt.eu> <20090722082940.GA18826@asahi.TechFak.Uni-Bielefeld.DE> <4A7327DE.9010305@grohnwaldt.eu> <4A7382EF.5050400@grohnwaldt.eu>
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This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig9B01C3A5CEE6CE6040596675 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Uwe Grohnwaldt schrieb am 01.08.2009 01:49 (localtime): > Hi, >=20 > disabling cpufreq in the kernel configfile works fine. after that it=20 > looks fine: > dev.cpu.0.freq_levels: 2000/20000 1000/10000 800/8000 400/4000 This is done by throttling. Unfortunately it doesn't safe power for me,=20 at least on my E8400 the power consumption raises about a hardly=20 measureable bit. If I'm right the C7 (Eden V4, Esther in my case) supports enhanced speed = stepping. I can enable it in my BIOS (along with SpeedStep1) which=20 should enable the cpu to operate with 0.884 Volt. This would safe=20 enourmous power. Unfortunately I can't hack the est driver to attach to C7. Any volunteers? :) Best regards, -Harry P.S.: I'll do some measurings regarding the throttling on the C7 to=20 verify disabling throttling is the right thing ;) --------------enig9B01C3A5CEE6CE6040596675 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.12 (FreeBSD) iEYEARECAAYFAkp1ehAACgkQLDqVQ9VXb8iaBQCg0Hcm/zmdOUKy1np86Yy3jZr+ UMkAoImbN5SXD+cu4PqHSz43W5i76KGL =lSJF -----END PGP SIGNATURE----- --------------enig9B01C3A5CEE6CE6040596675--
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