Arch Linux

emphire

Member

From: Canada

Registered: 2007-03-21

Posts: 203

cpufrequtils stopped working

Out of the blue, I noticed that it looks like cpufrequtils isn't working correctly for me anymore (it did before).

Even when it is set to the powersave governor and very little is running, it always runs at the maximum CPU freq now.

$ uptime
 17:41:30 up 14 min,  1 user,  load average: 0.02, 0.08, 0.10

$ cpufreq-info -p
1600000 1862000 powersave
$ cpufreq-info -f
1862000

# cpufreq-set -g userspace
# cpufreq-set -f 1600000
$ cpufreq-info -p
1600000 1862000 userspace
$ cpufreq-info -f
1862000

$ lsmod | grep cpufreq
cpufreq_conservative     7816  0 
cpufreq_ondemand        8464  0 
cpufreq_stats           6208  0 
cpufreq_userspace       4564  1 
cpufreq_powersave       2304  1 
acpi_cpufreq           12336  1 
freq_table              4640  3 cpufreq_ondemand,cpufreq_stats,acpi_cpufreq
processor              32408  2 thermal,acpi_cpufreq

So everything is loaded.  The policy governer is being set, but it seems like it is just being ignored.  It doesn't even drop the CPU frequency when I set it manually from the userspace policy.

Does anyone have any idea where I could look to figure out what has changed?

luca

Member

From: Rome

Registered: 2005-10-30

Posts: 280

Re: cpufrequtils stopped working

Hi emphire,
show the output of these commands:

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies

and see if dmesg command prints some useful informations

emphire

Member

From: Canada

Registered: 2007-03-21

Posts: 203

Re: cpufrequtils stopped working

Thanks.  It looks like cpufrequtils must have gotten a little more picky about frequencies.

$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
1862000 1596000

Changing min_freq in /etc/conf.d/cpufreq from "1.6GHz" to "1596000" and max_freq from "1.86GHz" to "1862000" did the trick.