laptop cpufreq events

raska · 10-07-2005, 09:51 AM

I've compiled kernel 2.6.13.2 for my laptop with CPU frequency scaling enabled (everything built-in), the default governor is userspace but performance, powersave and conservative governors are enabled too. I've included the AMD Opteron / Athlon 64 cpufreq driver (the laptop has an AMD Athlon 64 3000+ processor) and it actually works: when the laptop boots without the AC cable plugged in the processor is at low frequency (800 MHz), when it boots with the AC cable plugged in the processor is at high frequency (1600 MHz).

My issue is that I don't want to reboot the computer in order to change the processor's frequency, I'd like to use some program or daemon which catchs these (and maybe other) events and do it automaticaly. I don't know what to use, any suggestions?

Thanks in advance

Peace.

dunric · 10-07-2005, 10:09 AM

I would recommend f.e. cpudyn - a CPU frequency scaling daemon.

raska · 10-07-2005, 10:32 AM

cool! I got it, but I shall install it later I'm in the office

Thanks

YellowBull · 10-08-2005, 04:42 PM

modprobe cpufreq_ondemand
echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

should do it.

raska · 10-09-2005, 06:53 PM

Quote:

Originally posted by YellowBull
modprobe cpufreq_ondemand
echo ondemand > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

should do it.

thanks for the advice YellowBull but that's not exactly what I wanted. I have got the cpudyn program and works like a charm, it's just what I needed.

Thanks again anyway.

Peace.

komuthan · 10-10-2005, 10:06 AM

Iam using cpufreqd
but i want to load this deamon on startup how can i do this

raska · 10-10-2005, 10:51 AM

Quote:

Originally posted by komuthan
Iam using cpufreqd
but i want to load this deamon on startup how can i do this

add the command to your /etc/rc.d/rc.local file, this file is run when system boots.
try to include full path to the program.

you can look for the running process with ps -ef and check the syntax, copy it to the file.

dunric · 10-10-2005, 12:33 PM

I've add following in /etc/rc.d/rc.local:

Code:

# Start CPU frequency and disk spindown control daemon
if [ -x /etc/rc.d/rc.cpudynd ]; then
        /etc/rc.d/rc.cpudynd start
fi

rc.cpudyn startup script has to be found in cpudyn source tarball.

raska · 10-10-2005, 03:21 PM

I didn't have that file... damn!

stupid windo... this isn't... LOL it's fine then

Peace.

komuthan · 10-10-2005, 11:15 PM

I dont have rc.cpufreqd in /etc/rc.d only ı have a conf file in /etc that cpufreqd.conf,
İ installed cpufreqd with slapt get

raska · 10-11-2005, 08:39 AM

Quote:

Originally posted by komuthan
I dont have rc.cpufreqd in /etc/rc.d only ı have a conf file in /etc that cpufreqd.conf,
İ installed cpufreqd with slapt get

albeit, we were talking about the file /etc/rc.d/rc.cpudynd

dunric · 10-11-2005, 09:35 AM

When installing from source tarball it's copied from file named cpudyn.slackware

raska · 10-11-2005, 09:45 AM

Quote:

Originally posted by dunric
When installing from source tarball it's copied from file named cpudyn.slackware

mmmm ... interesting... that's why I didn't even noticed it... I should look for it, thanks

komuthan · 10-13-2005, 02:34 AM

ok I found a good application for this job "cpuspeedy"
it has a gtkbased graphical user interface and does the job perfect
http://cpuspeedy.sourceforge.net/

komuthan · 10-13-2005, 02:34 AM

ok I found a good application for this job "cpuspeedy"
it has a gtkbased graphical user interface and does the job perfect
http://cpuspeedy.sourceforge.net/