cpuinfo_cur_freq always max

cpuinfo_cur_freq always max

[Stephen Clark]

Hello,

Running linux 2.6.23.1-21.fc7 
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
correctly reflects the cpu speed, when idle it is 996000 and when 
compiling it is 1826000.
Its also the same as what is in /proc/cpuinfo.

But with 2.6.23.8-34.fc7 
/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
is always the max cpu speed of 1826000.

While cpuinfo_cur_freq is the max 1826000 /proc/cpuinfo relflects the 
correct speed when idle of
996000

This is on an asus laptop with an intel core 2 duo T5600 processor.

Anyone else see this problem.

Regards,
Steve

-- 

"They that give up essential liberty to obtain temporary safety, 
deserve neither liberty nor safety."  (Ben Franklin)

"The course of history shows that as a government grows, liberty 
decreases."  (Thomas Jefferson)

Re: cpuinfo_cur_freq always max

[Johannes Weiner]

Hi Steve,

Stephen Clark <Stephen.Clark@seclark.us> writes:

> But with 2.6.23.8-34.fc7
> /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
> is always the max cpu speed of 1826000.
>
> While cpuinfo_cur_freq is the max 1826000 /proc/cpuinfo relflects the
> correct speed when idle of
> 996000

Which governor are you using?  ondemand?

	Hannes

Re: cpuinfo_cur_freq always max

[Johannes Weiner]

Hi,

Stephen Clark <Stephen.Clark@seclark.us> writes:

>>Which governor are you using?  ondemand?
> Not sure - but the only thing that is changed is the kernel - if I go
> back to 2.6.23.1 it works correctly.

Have a look at /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

	Hannes

PS: Steve, please keep the list in CC.

Re: cpuinfo_cur_freq always max

[Stephen Clark]

Johannes Weiner wrote:

>Hi,
>
>Stephen Clark <Stephen.Clark@seclark.us> writes:
>
>  
>
>>>Which governor are you using?  ondemand?
>>>      
>>>
>>Not sure - but the only thing that is changed is the kernel - if I go
>>back to 2.6.23.1 it works correctly.
>>    
>>
>
>Have a look at /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
>
>	Hannes
>
>PS: Steve, please keep the list in CC.
>
>  
>
userspace



-- 

"They that give up essential liberty to obtain temporary safety, 
deserve neither liberty nor safety."  (Ben Franklin)

"The course of history shows that as a government grows, liberty 
decreases."  (Thomas Jefferson)

Re: cpuinfo_cur_freq always max

[Johannes Weiner]

Hi,

Stephen Clark <Stephen.Clark@seclark.us> writes:

> userspace

Please supply the full dmesg output on the non-working kernel the
corresponding .config (or /proc/config.gz).

Added Dave to CC.

	Hannes

Re: cpuinfo_cur_freq always max

[Stephen Clark]

Johannes Weiner wrote:

>Hi,
>
>Stephen Clark <Stephen.Clark@seclark.us> writes:
>
>  
>
>>userspace
>>    
>>
>
>Please supply the full dmesg output on the non-working kernel the
>corresponding .config (or /proc/config.gz).
>
>Added Dave to CC.
>
>	Hannes
>
>  
>
Duh - I rebooted into the new kernel and no longer see the behavior I 
described above. Maybe I had something going in
the background i didn't realize. Thing was I even started a bash empty 
while loop to see if /proc/cpuinfo speed would go
up and it did.

I have an applet that displays on my kde kicker panel that every 2 
seconds reads /sys/.../cpuinfo_cur_freq and it was
sitting on the max speed all the time. Hmmm.

Well Thanks for the response and sorry for the false alarm.

Steve

-- 

"They that give up essential liberty to obtain temporary safety, 
deserve neither liberty nor safety."  (Ben Franklin)

"The course of history shows that as a government grows, liberty 
decreases."  (Thomas Jefferson)