EST (Enhanced Intel SpeedStep(R) Technology) on amd64

[Gabriel Lavoie]

My processor seems correctly recognized by est under 7.1, I get the
correct frequency/value pairs. What I would like is the automatic
behaviour where the CPU is downclocked to 50% under no load, found
under Windows/Linux and I would also like to know why estctrl isn't
supported under amd64. I already contacted Colin. :)

Gabriel

>
>    Maybe this comment says why (from .../sys/i386/cpufreq/est.c)?
>
> /*
>  * Frequency (MHz) and voltage (mV) settings.  Data from the
>  * Intel Pentium M Processor Datasheet (Order Number 252612), Table 5.
>  *
>  * Dothan processors have multiple VID#s with different settings for
>  * each VID#.  Since we can't uniquely identify this info
>  * without undisclosed methods from Intel, we can't support newer
>  * processors with this table method.  If ACPI Px states are supported,
>  * we get info from them.
>  */
>
>    Colin could give you the definite answer, but I'm pretty sure that's it...
> Cheers,
> -Garrett
>



-- 
Gabriel Lavoie
glavoie at gmail.com