[solved] Cpufreq default governor

[uggla]

Hi!

Is there a way to set the default cpufreq governor without installing cpufreq-tools and set cpufreq-set to run at every boot?

regards
/Uggla

[curaga]

The info and control files are at

/sys/devices/system/cpu/cpuX/cpufreq/

Replace X with the core you want to control.

You can (as root) echo the governor you want into the current_governor (IIRC) file. I tend to do this as well, if there's a way via /proc or /sys I never use an util.

[uggla]

Works like a charm. Thanks!

/Uggla

[Machacz]

I tend to do this as well...

Works like a charm.

I tried to poke 'conservative' into /sys/devices/system/cpu/cpu0/cpufreq/scalling_governor, but it's impossible to modify this file and other files in this directory. Your posts are from 2010 year. Can you do this actually ?
What version do you use now ?

[Misalf]

Code: [Select]

echo "conservative" | sudo tee /sys/devices/system/cpu/cpu[0-99]/cpufreq/scaling_governor


[Juanito]

I think the problem is here:

Code: [Select]

$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
performance powersave


Code: [Select]

$ sudo su
# echo 'conservative' > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
sh: write error: Invalid argument
# echo 'performance' > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
performance

Edit: This has me puzzled though:

Code: [Select]

# modprobe cpufreq_conservative
# cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
performance powersave


[Machacz]

echo "conservative" | sudo tee . . .

conservative
tee: /sys/devices/system/cpu/cpu0/cpufreqd/scalling_governor: I/O Error

and lsmod lists cpufreq_conservative.


Do your computers blow worm when do nothing ?