[Question] "cat /proc/cpuinfo: different results between my F13 (i686) and F13-Beta-Livecd (x86_64)

Joachim Backes joachim.backes at rhrk.uni-kl.de
Thu May 6 08:08:09 UTC 2010


On 05/06/2010 09:21 AM, cornel panceac wrote:
>
>
> 2010/5/6 Joachim Backes <joachim.backes at rhrk.uni-kl.de
> <mailto:joachim.backes at rhrk.uni-kl.de>>
>
>     Hi,
>
>     I have an asrock board ConRoe1333-DVI/H. CPU: Intel core duo 4500.
>
>     Running the "cat /proc/cpuinfo" with F13-Beta-Live (x86_64), it
>     reports *1200.00 MHz* for each core.
>
>     Getting the same results on a KNOPPIX-6.2 (i686).
>
>     But running the same command on my real F13 system (i686) says:
>     *2194.034 MHz* for each core.
>
>     Can somebody explain these differences?
>
>
> sounds like frequency scaling, to me.

Hi Cornel,

thanks for the hint. *cpuspeed* was the culprit: If booting my F13 in 
runlevel 1, it shows the same reduced MHz. This results from an enabled 
cpuspeed in runlevel 1. By stopping cpuspeed, getting immediately the 
std CPU speed (2.2 GHz).

Kind regards

Joachim Backes <joachim.backes at rhrk.uni-kl.de>

http://www.rhrk.uni-kl.de/~backes

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