i have a couple of questions regarding CPUFREQ and POWERSAVED.Which im trying to set up on my laptop.
what are the correct modules for Intel M Processors for powersave and cpusave?
processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 13 model name : Intel(R) Celeron(R) M processor 1.50GHz stepping : 8 cpu MHz : 1495.813 cache size : 1024 KB
# The powersaved startscript will load this module for CPU frequency # scaling support. If nothing is specified here, the most common cpufreq # modules will be tried. Entering the correct module will reduce the # warnings in syslog during boot and probably speed up booting a bit. CPUFREQD_MODULE=""
this is the module i need for my CPU...also im wondering which CPU govenor is the best or people recomend. I set it to ondemand as a start.
# If set to userspace, the powersave daemon itself will check # for CPU load and adjust the frequency approriate. # If set to kernel, the frequency will be adjusted by kernel # CPU frequency governors. These are by default # (kernel module - governor/powersave policy): # ondemand/dynamic, powersave/powersave, performance/performance CPUFREQ_CONTROL="ondemand"
So, for the module, I think you should try the 'acpi-cpufreq' module.
My favorite governor is the 'conservative' one. Under load, it will ramp up the frequency, but it will generally keep it as low as possible.
ok... so i tried. ajusting the settings abit... i will post the changes. However when i run cpufreq and powersaved it gives me errors.
[root@myhost root]# /etc/rc.d/cpufreq start :: Setting cpufreq governing rules [BUSY] wrong, unknown or unhandled CPU? [DONE]
[root@myhost root]# /etc/rc.d/powersaved start :: Starting D-BUS system messagebus [DONE] :: Starting Hardware Abstraction Layer [DONE] Cannot load cpufreq governors - No cpufreq driver available :: Starting Powersave Daemon [DONE]
#configuration for cpufreq control # valid governors: # ondemand, performance, powersave, # conservative, userspace governor="conservative" # valid suffixes: Hz, kHz (default), MHz, GHz, THz min_freq="1.0GHz" max_freq="1.5GHz"
and in /etc/powersave/cpufreq
CPUFREQD_MODULE="acpi-cpufreq" (as suggjested?)
Last edited by eppa (2007-06-06 10:21:34)
What happens if you run, as root:
[root@myhost root]# modprobe acpi-cpufreq
FATAL: Error inserting acpi_cpufreq (/lib/modules/2.6.21-ARCH/kernel/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.ko): No such device
Last edited by eppa (2007-06-06 12:55:09)
After doing some googleing, it seems that you may not be able to scale the frequency on your processor. Just to make sure I didn't read it wrong, try typing the following command as root:
If that dosn't work, I don't think you'll be able to scale your processor.
The preferred module was speedstep-centrino until some recent kernel release, which has deprecated the use of that
module in favor of acpi-cpufreq.
I own such a processor, and the modules I use are :