Difference between revisions of "How to configure powernowd"
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| − | {{NOTE|See the [[ | + | {{NOTE|See the [[How to make use of Dynamic Frequency Scaling|Dynamic Frequency Scaling HOWTO]] on how to avoid using cpu frequency scaling daemons by using the kernel builtin ondemand governor.}} |
powernowd originally was only written for AMD CPUs which support PowerNow! technology, but it supports other CPUs as well. | powernowd originally was only written for AMD CPUs which support PowerNow! technology, but it supports other CPUs as well. | ||
| − | Make sure you have loaded the necessary kernel modules. (See [[ | + | Make sure you have loaded the necessary kernel modules. (See [[How to make use of Dynamic Frequency Scaling]]) |
| − | + | ==Installation== | |
| + | On {{Debian}} you can do this with: | ||
| + | :{{cmdroot|apt-get install powernowd}} | ||
| − | + | ==Configuration== | |
| + | Use the sys interface to set the min and max speed: | ||
| + | :{{cmdroot|echo 825000 >/sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq}} | ||
| + | :{{cmdroot|echo 2200000 >/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq}} | ||
| + | :{{cmdroot|/etc/init.d/powernowd start}} | ||
| − | {{ | + | In {{Debian}} you may specify different options for powernowd in {{path|/etc/default/powernowd}}. This file will be loaded by the init script {{path|/etc/init.d/powernowd}}. |
| − | |||
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Latest revision as of 23:46, 17 January 2006
NOTE!
See the Dynamic Frequency Scaling HOWTO on how to avoid using cpu frequency scaling daemons by using the kernel builtin ondemand governor.
powernowd originally was only written for AMD CPUs which support PowerNow! technology, but it supports other CPUs as well.
Make sure you have loaded the necessary kernel modules. (See How to make use of Dynamic Frequency Scaling)
Installation
On Debian you can do this with:
# apt-get install powernowd
Configuration
Use the sys interface to set the min and max speed:
# echo 825000 >/sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq# echo 2200000 >/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq# /etc/init.d/powernowd start
In Debian you may specify different options for powernowd in /etc/default/powernowd. This file will be loaded by the init script /etc/init.d/powernowd.
