CPU speed not reported correctly

[David O'Brien]

On Thu, Dec 30, 2004 at 09:00:22AM -0500, Michael W. Oliver wrote:
> On 2004-12-29T16:57:38-0800, David O'Brien wrote:
> > On Wed, Dec 29, 2004 at 04:25:55PM -0500, Michael W. Oliver wrote:
> > > CPU: AMD Athlon(tm) 64 Processor 3400+ (801.83-MHz K8-class CPU)
> > .
> > > OK, here is my question:  Why is the CPU speed reported as 801.83MHz?
> > > Is there something really wrong with my setup here?  I have this machine
> > > configured to dual boot with the other OS being the x64 version of XP,
> > > and it reports a 2.2GHz CPU (for what it's worth...).
> 
> > You've some how gotten your Athlon64 processor in Cool-n-Quiet (ie,
> > PowerNOW) cool, low-power mode.  If you do a cold boot into FreeBSD, what
> > CPU speed is reported?  By chance is this a laptop and not a desktop.
> 
> Thanks for the reply David.
> 
> When booting cold, the same speed is reported -- 801.83-MHz.  Yes, this
> is a laptop (Sager 4750-V).

This is normal behavior for many laptops then -- they start up in
low-power mode.  I've been waiting for the FreeBSD power-freqency control
framework to hit the tree before adding AMD64 Cool-n-Quiet support.

-- 
-- David  (obrien at FreeBSD.org)