[ltp] T40 cpufreq
Dan Borello
linux-thinkpad@linux-thinkpad.org
Thu, 21 Aug 2003 17:08:13 -0500
On Mon, 2003-08-18 at 11:08, Valient Gough wrote:
> On Sat, 2003-08-16 at 14:18, mukesh agrawal wrote:
> > I think /proc/cpuinfo just reports what was detected at boot time.
>
> Not anymore.. On my T40 w/ SuSE 8.2 (ships with patched 2.4.20
> kernel):
>
> # cat /proc/cpuinfo | sed -n "/cpu MHz\|bogo/p"
> cpu MHz : 1598.665
> bogomips : 3191.60
>
> # cat /proc/cpufreq
> minimum CPU frequency - maximum CPU frequency - policy
> CPU 0 199833 kHz ( 12 %) - 1598665 kHz (100 %) -
> performance
>
> # echo "0%40%100%powersave" > /proc/cpufreq
>
> cat /proc/cpuinfo | sed -n "/cpu MHz\|bogo/p"
> cpu MHz : 799.332
> bogomips : 1595.80
>
> # cat /proc/cpufreq
> minimum CPU frequency - maximum CPU frequency - policy
> CPU 0 639466 kHz ( 40 %) - 1598665 kHz (100 %) -
> powersave
My doesn't auto update, I wonder if that is a patch. Either way, my cpu
changes speeds so it is all good.
dan