Re: i386/46222: CPU speed incorrectly reported

--- Hubert Tournier <hubert.tournier <at> online.fr> wrote:
>  >Synopsis: CPU speed incorrectly reported
>  >State-Changed-From-To: open->feedback
>  >State-Changed-By: dwmalone
>  >State-Changed-When: Mon Dec 23 02:57:24 PST 2002
>  >http://www.freebsd.org/cgi/query-pr.cgi?pr=46222
> 
> Hello David and thanks for your answer !
> 
>  >The speed of the CPU is actually measured by seeing how many
>  >instructions are executed in an interval measured by the real time
>  >timer. This suggests that either your CPU is running slow or the
>  >timer is running fast.
>  >The CPU could be running slow because of APM or ACPI settings
>  >reducing power consumption by slowing the CPU. Can you look into
>  >this possibility?
> 
> After modifying the hardware BIOS setup from
> "Battery Save Mode = Low Power" to "Full Power"
> instead of getting :
> 
> 	Timecounter "TSC"  frequency 184530035 Hz
> 	CPU: Pentium II/Pentium II Xeon/Celeron (184.53-MHz 686-class CPU)
> 
> I get the correct answer:
> 
> 	Timecounter "TSC"  frequency 366597251 Hz
> 	CPU: Pentium II/Pentium II Xeon/Celeron (366.60-MHz 686-class CPU)
>