Running F13 32 bit.
There are these frequency apps:
/usr/bin/cpufreq-aperf
/usr/bin/cpufreq-info
/usr/bin/cpufreq-selector
/usr/bin/cpufreq-set
It seems they either require a user space governor, or o support is
availbale.
To wit:
$ sudo /usr/bin/cpufreq-selector
No cpufreq support
$ lsmod | egrep 'freq|power'
cpufreq_ondemand 7826 0
$ sudo /usr/bin/cpufreq-set -f 2200
Error setting new values. Common errors:
- Do you have proper administration rights? (super-user?)
- Is the governor you requested available and modprobed?
- Trying to set an invalid policy?
- Trying to set a specific frequency, but userspace governor is not
available,
for example because of hardware which cannot be set to a specific
frequency
or because the userspace governor isn't loaded?
So, I searched the kernel for the governor module, but found none.
$find /lib/modules/`uname -r` -name \*gov\*
$
It comes up empty
I configured and built the kernel with
CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
The documentation says:
2. Governors In the Linux Kernel
================================
2.1 Performance
---------------
The CPUfreq governor "performance" sets the CPU statically to the
highest frequency within the borders of scaling_min_freq and
scaling_max_freq.
However, I do not find the module cpufreq_performance.ko in
/lib/modules/`uname -r`/....etc
Also, I am unable to set the min or the max frequency. To wit:
$ sudo /usr/bin/cpufreq-set -d 2200MHz -u 2200MHz
wrong, unknown or unhandled CPU? <<< man page says default is 0
Error setting new values. Common errors:
- Do you have proper administration rights? (super-user?)
- Is the governor you requested available and modprobed?
>>>> Only governor loaded is cpufreq_ondemand. cpufreq_performance did
not get built.
- Trying to set an invalid policy?
- Trying to set a specific frequency, but userspace governor is not
available,
for example because of hardware which cannot be set to a specific
frequency
or because the userspace governor isn't loaded?
>>>>> So where is the user space governor? The values I set are in
megaherz but perhaps they need to be in gigaherts???
So, I tried to specify the cpu as 0:
$ sudo /usr/bin/cpufreq-set -c 0 -d 2200MHz -u 2200MHz
wrong, unknown or unhandled CPU?
Error setting new values. Common errors:
- Do you have proper administration rights? (super-user?)
- Is the governor you requested available and modprobed?
- Trying to set an invalid policy?
- Trying to set a specific frequency, but userspace governor is not
available,
for example because of hardware which cannot be set to a specific
frequency
or because the userspace governor isn't loaded?
Could someone tell me where I can find the user space governor, and/or
force the build of cpufreq_performance.ko ?
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