[ltp] CPU running ??? but why????

Arno Trautmann linux-thinkpad@linux-thinkpad.org
Tue, 10 Jun 2008 08:09:50 +0200


Henrique de Moraes Holschuh wrote:
> On Mon, 09 Jun 2008, Henrique de Moraes Holschuh wrote:
>> That's broken.  See that 0.0ms?  Kernel bug for certain.  No CPU should even
>> manage to heat up when it stays 50% of its time in C3.
> 
> Unless it is a two-core CPU and the kernel is not paying attention to the
> other core.  So, if you have two cores, make sure both are enabled...

cpufreq-info gives me values for both CPUs, so they both are enabled.
As for the newer kernel:

bash-3.2# uname -a
Linux arnox61 2.6.25-ARCH #1 SMP PREEMPT Fri May 16 14:52:43 CEST 2008 
i686 Intel(R) Core(TM)2 Duo CPU L7500 @ 1.60GHz GenuineIntel GNU/Linux

That is the most recent kernel for arch.

Arno