From owner-freebsd-current@FreeBSD.ORG  Mon May 27 12:13:49 2013
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by hub.freebsd.org (Postfix) with ESMTP id 96577605
 for <current@freebsd.org>; Mon, 27 May 2013 12:13:49 +0000 (UTC)
 (envelope-from micchie@sfc.wide.ad.jp)
Received: from mail.sfc.wide.ad.jp (ns.sfc.wide.ad.jp
 [IPv6:2001:200:0:8803:203:178:142:143])
 by mx1.freebsd.org (Postfix) with ESMTP id 66AA8DD7
 for <current@freebsd.org>; Mon, 27 May 2013 12:13:48 +0000 (UTC)
Received: from epi.lan (prova.iet.unipi.it [131.114.58.86])
 by mail.sfc.wide.ad.jp (Postfix) with ESMTPSA id 00A4A2780A9;
 Mon, 27 May 2013 21:13:42 +0900 (JST)
Subject: Re: Changing CPU frequency for Xeon processors
Mime-Version: 1.0 (Apple Message framework v1283)
Content-Type: text/plain; charset=us-ascii
From: Michio Honda <micchie@sfc.wide.ad.jp>
In-Reply-To: <5197DF7C.1040305@vangyzen.net>
Date: Mon, 27 May 2013 14:13:36 +0200
Content-Transfer-Encoding: quoted-printable
Message-Id: <A56A8368-775C-4FFF-A3BF-E0B8D1438E5F@sfc.wide.ad.jp>
References: <1280DF1A-1DAC-43F1-A62D-B4DC9378FF88@sfc.wide.ad.jp>
 <5197DF7C.1040305@vangyzen.net>
To: Eric van Gyzen <eric@vangyzen.net>
X-Mailer: Apple Mail (2.1283)
Cc: current@freebsd.org
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
 <freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-current>, 
 <mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
 <mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 27 May 2013 12:13:49 -0000

Thanks Eric, in case of HP Proliant DL120 G7 server, BIOS's =
configuration needs to be "OS Control Mode".
The similar would apply to other systems.

Cheers,
- Michio

On May 18, 2013, at 10:07 PM, Eric van Gyzen wrote:

> On 05/18/2013 10:09 AM, Michio Honda wrote:
>> Hi,
>>=20
>> I'm trying to experiment with downclocking CPU.
>> My environment is 10.0-CURRENT amd64.
>>=20
>> However, my CPU (Xeon E31220) seems not to be supported by the =
cpufreq module, thus dmesg shows:
>> est0: <Enhanced SpeedStep Frequency Control> on cpu0
>> est: CPU supports Enhanced Speedstep, but is not recognized.
>>=20
>> As a result, although sysctl -a shows the list of available frequency =
values (dev.cpu.0.freq_levels: 3093/-1 2706/-1 2319/-1 1933/-1 1546/-1 =
1159/-1 773/-1 386/-1
>> dev.), I cannot set the value (the error message is "sysctl: =
dev.cpu.0.freq=3D773: Device not configured").
>>=20
>> Do you have any idea to change CPU frequency for this CPU?
>=20
> In my experience, the "not recognized" message indicates that the =
feature is not enabled in the BIOS.
>=20
> Eric
> _______________________________________________
> freebsd-current@freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-current
> To unsubscribe, send any mail to =
"freebsd-current-unsubscribe@freebsd.org"
>=20