CPU greqency scaling threshold

English Hardware
1

Hello everybody

I just switched from Arch Linux and I have very basic problem. How to set CPU freqency thershold in Suse?

In Arch it was easy

echo 50 > /sys/devices/system/cpu/cpu0/cpufreq/ondemand/up_threshold

How to do similar operation in OpenSUSE?

2

Hi
Works the same in openSUSE? If it’s not, you may need to check the cpu
settings with the application cpufreq-info to see it’s set to ondemand
it’s part of the cpufrequtils rpm.

–
Cheers Malcolm °¿° (Linux Counter #276890)
openSUSE 11.3 Milestone 2 (i586) Kernel 2.6.33-rc7-3-desktop
up 11:09, 2 users, load average: 0.17, 0.18, 0.12
ASUS eeePC 1000HE ATOM N280 1.66GHz | GPU Mobile 945GM/GMS/GME

3

OK, last question. How to make sure, tha cpufreq always starts?

4

Majki-Fajki wrote:
> OK, last question. How to make sure, tha cpufreq always starts?

grep -i freq /var/log/boot.msg

–
palladium

5

What does this command do?

6

Majki-Fajki wrote:
> What does this command do?
>
>
do you know what grep does?
if not, see man grep

grep ‘looks’ inside the specified file (boot.msg) looking for every
instance of the string “freq” (or whatever is specified) and because
the -i flag is set it will also find

Freq
FREQ
fReQ
etc

and it will return to the terminal every line in which if finds the
term, mine here, just now looks like this:

grep -i freq /var/log/boot.msg
Loading CPUFreq modulesdone

if yours returns nothing, then your cpu frequency module is not loaded
in the kernel and you get no scaling…

–
palladium

7

Hi
You need to configure with the pm-profiler eg;


sudo pm-profiler -l
root's password:

cat: /var/run/pm-profiler.profile: No such file or directory
PROFILE=
CPUFREQ_GOVERNOR=ondemand
SATA_ALPM=
DIRTY_WRITEBACK_CENTISECS=500
READ_AHEAD_KB=128
CPUFREQ_GOVERNOR=ondemand
CPUFREQ_UP_CPUFREQ_SAMPLING_RATE=10000
CPUFREQ_UP_THRESHOLD=40
CPUFREQ_ONDEMAND_POWERSAVE_BIAS=0

–
Cheers Malcolm °¿° (Linux Counter #276890)
SUSE Linux Enterprise Desktop 11 (x86_64) Kernel 2.6.27.45-0.1-default
up 1 day 10:22, 2 users, load average: 3.67, 3.99, 4.11
GPU GeForce 8600 GTS Silent - CUDA Driver Version: 190.53