Content-class: urn:content-classes:message
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Subject: RE: Slower CPU frequency reported by the kernel
Date: Tue, 6 Feb 2007 12:38:11 -0600
Message-ID: <1449F58C868D8D4E9C72945771150BDFD965A1@SAUSEXMB1.amd.com>
In-Reply-To: <eq1ukv$p21$1@sea.gmane.org>
Thread-Topic: Slower CPU frequency reported by the kernel
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References: <38b2ab8a0702020311o54789ef6xff819dc3b492b005@mail.gmail.com>
 <eq1ukv$p21$1@sea.gmane.org>
From: "Langsdorf, Mark" <mark.langsdorf@amd.com>
To: lnx.tmp@gmail.com, linux-kernel@vger.kernel.org
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> > I'm using a PC with AMD 64 3000+ cpu which is theoricaly running at
> > 2Ghz. But when looking at /proc/cpuinfo, the kernel reports that it
> > runs only at 1Ghz:
> > ...
> > What's going wrong ?
> 
> Do you have feature called "Cool N' Quiet" enabled in BIOS?
> I had the same problem and disabling the feature the problem resolved.

Linux reports the frequency the processor is currently running at.
Cool N' Quiet is a feature that allows the processor to run at a
lower frequency and voltage when it is idle, thereby saving you
power and letting your fans run slower and quieter.  Don't turn it
off.

-Mark Langsdorf
AMD, Inc.


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