[arch-general] CPU frequency scaling issue

[Ralf Mardorf]

On Sun, 14 Dec 2014 16:59:34 +0100, Joakim Hernberg wrote:
> On Sat, 13 Dec 2014 23:22:12 +0100
> Ralf Mardorf <ralf.mardorf at rocketmail.com> wrote:
> 
> > Hi,
> > 
> > any idea why CPU frequency scaling doesn't work for 3.14.25-rt22 [1]
> > and why it does work for 3.17.6 [2]?
> > 
> > Regards,
> > Ralf
> 
> Because it's broken on 3.14 with realtime patch :)
> 
> Probably quite offtopic on this list since it's from aur and
> archaudio...
> Think it still works on 3.10-rt-lts

My apologies and yes, you are right, it works with the LTS linux-rt :).

[rocketmouse at archlinux ~]$ uname -rm
3.10.61-rt65-1-rt-lts x86_64
[rocketmouse at archlinux ~]$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
ondemand
ondemand
[rocketmouse at archlinux ~]$ printf performance | sudo tee /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor > /dev/null 
[sudo] password for rocketmouse: 
[rocketmouse at archlinux ~]$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
performance
performance
[rocketmouse at archlinux ~]$

Thank you,
Ralf

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