[CentOS] sempron 2500+ running at 1044 cpu speed.

Andy Green andy at warmcat.com
Thu May 4 18:40:58 UTC 2006


Kai Schaetzl wrote:
> Jerry Geis wrote on Thu, 04 May 2006 13:37:02 -0400:
> 
>> "operation not permitted".
> 
> SELinux?

No, not selinux.  You can't create dirs in /sys from usermode.

I guess there is trouble with the kernel module (which is actually part 
of the monolithic kernel for Fedora anyway) that does cpuspeed for your 
brand of CPU.

cat /var/log/messages | grep power   or
dmesg | grep power

I get something like this:

# dmesg | grep power
powernow-k8: Found 2 AMD Athlon 64 / Opteron processors (version 1.60.0)
powernow-k8:    0 : fid 0xe (2200 MHz), vid 0xa (1300 mV)
powernow-k8:    1 : fid 0xc (2000 MHz), vid 0xa (1300 mV)
powernow-k8:    2 : fid 0xa (1800 MHz), vid 0xc (1250 mV)
powernow-k8:    3 : fid 0x2 (1000 MHz), vid 0x12 (1100 mV)

indicating powernow-k8, the module that does the cpuspeed dirty work, is 
happy.  The lack of the /sys entry may suggest the module was unhappy in 
your case at boot time, it which case you might find a complaint instead.

-Andy
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