| View previous topic :: View next topic |
| Author |
Message |
dat
Apprentice
Joined: 04 Jun 2004
Posts: 186
Location: Location: Location: Location: Location: Location:
|
 Posted: Sun Jun 27, 2004 6:48 pm Post subject: What speed is my CPU running at? SOLVED |
 |
|
I'm a little confused. I'm running an IBM x31 - Centrino 1.3ghz laptop. I upgraded to 2.6.7 and am trying to use acpi. My laptop is running a bit hot, so I wanted to scale down the cpu a bit, but I can't really get a straight answer as to what its running at. I also tried using speedfreq, so I don't kow if that is messing something up.
| Code: | | cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq |
says that I'm scaling down to 600.
says that I'm running at 600.
I *know* i'm not running at 600mhz based on the system responsiveness and the temperature that the laptop is still running at.
| Code: | | watch -n 1 x86info -mhz |
says that I'm running anywhere between ~150mhz to ~1300mhz (Based on load)
| Code: | | /etc/conf.d/speedfreq |
has this set:
| Code: | | SPEEDFREQ_SPEED="900" |
I have no idea what is right, but I can only assume that some of these files are conflicting with eachother.
_________________
HASH BANG SLASH BIN SLASH BASH
in a world without fences, who needs gates?
Last edited by dat on Mon Jun 28, 2004 1:23 am; edited 1 time in total |
|
| Back to top |
|
 |
brodo
Guru
Joined: 15 Apr 2003
Posts: 319
|
| Posted: Sun Jun 27, 2004 10:13 pm Post subject: |
|
|
Can you please do the folowing:
1) watch out for cpufreq/speedstep/acpi-related error messages in the kernel logs
2) please make sure you're using the speedstep_centrino driver and not the acpi cpufreq driver
3) disable "speedfreq", enable the userspace cpufreq governor,
| Code: | | echo 600000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed |
and test behaviour |
|
| Back to top |
|
|
dat
Apprentice
Joined: 04 Jun 2004
Posts: 186
Location: Location: Location: Location: Location: Location:
|
| Posted: Mon Jun 28, 2004 12:26 am Post subject: |
|
|
| brodo wrote: |
2) please make sure you're using the speedstep_centrino driver and not the acpi cpufreq driver
|
Where can I choose this? Is it in a cpufreqd conf?
VVVV EDIT VVVV
From what I can see, its a kernel module(?) Now 2.6.7 has support for the proc type of the pentium m, which I selected. I'm guessing that negates the need for the module(?)
_________________
HASH BANG SLASH BIN SLASH BASH
in a world without fences, who needs gates? |
|
| Back to top |
|
|
dat
Apprentice
Joined: 04 Jun 2004
Posts: 186
Location: Location: Location: Location: Location: Location:
|
| Posted: Mon Jun 28, 2004 1:11 am Post subject: |
|
|
| brodo wrote: |
3) disable "speedfreq", enable the userspace cpufreq governor,
| Code: | | echo 600000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed |
and test behaviour |
| Code: | datlap cpufreq # cat 600000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed
-bash: /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed: Permission denied
datlap cpufreq #
|
There isn't a scaling_setspeed file in that dir. There's a scaling_cur_freq in there that says 1300000. As root, I don't have write permissions on that file without chmod'ing it, so I'm guessing that I'm not supposed to mess with it.
VVVV EDIT VVVV
Ok, I found a file called: scaling_governer that seems to do the same thing. It has slowed my pc down to 900000 max (which is what I wanted)...
Thanks for your help.
_________________
HASH BANG SLASH BIN SLASH BASH
in a world without fences, who needs gates? |
|
| Back to top |
|
|
brodo
Guru
Joined: 15 Apr 2003
Posts: 319
|
| Posted: Mon Jun 28, 2004 6:53 am Post subject: |
|
|
| dat wrote: | | brodo wrote: |
3) disable "speedfreq", enable the userspace cpufreq governor,
|
There isn't a scaling_setspeed file in that dir. |
There'd be one if you'd enabled the userspace cpufreq governor by
| Code: | | echo -n "userspace" > scaling_governor |
(as long as it is built into the kernel, else you need to | Code: | | modprobe cpufreq_userspace |
first, of course. |
|
| Back to top |
|
|
|
Kernel & Hardware
