On Fri, Nov 22, 2013 at 11:06:14AM +0100, Jochen Spieker wrote:
> Check the files in this directory:
>
> /sys/devices/system/cpu/cpu0/cpufreq
>
> Especially scaling_available_frequencies, scaling_max_freq and
> scaling_min_freq.
I've been using the cpufreq-info, which I think reports what's in those files.
For the Debian kernel I get:
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpuf...@vger.kernel.org, please.
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0 1 2 3
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 10.0 us.
hardware limits: 800 MHz - 2.30 GHz
available frequency steps: 2.30 GHz, 2.00 GHz, 1.80 GHz, 1.60 GHz, 1.40 GHz,
1.20 GHz, 1000 MHz, 800 MHz
available cpufreq governors: conservative, powersave, userspace, ondemand,
performance
current policy: frequency should be within 800 MHz and 2.30 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 800 MHz (asserted by call to hardware).
cpufreq stats: 2.30 GHz:5.20%, 2.00 GHz:0.14%, 1.80 GHz:0.16%, 1.60
GHz:0.20%, 1.40 GHz:0.28%, 1.20 GHz:0.44%, 1000 MHz:0.49%, 800 MHz:93.09%
(39552)
And then for the custom kernel I get:
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpuf...@vger.kernel.org, please.
analyzing CPU 0:
driver: acpi-cpufreq
CPUs which run at the same hardware frequency: 0 1 2 3
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 10.0 us.
hardware limits: 800 MHz - 2.30 GHz
available frequency steps: 2.30 GHz, 2.00 GHz, 1.80 GHz, 1.60 GHz, 1.40 GHz,
1.20 GHz, 1000 MHz, 800 MHz
available cpufreq governors: conservative, powersave, userspace, ondemand,
performance
current policy: frequency should be within 800 MHz and 2.30 GHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 1.80 GHz (asserted by call to hardware).
cpufreq stats: 2.30 GHz:11.32%, 2.00 GHz:1.27%, 1.80 GHz:0.94%, 1.60
GHz:0.59%, 1.40 GHz:1.17%, 1.20 GHz:0.60%, 1000 MHz:1.12%, 800 MHz:82.99% (713)
That last line for the custom kernel says the CPU runs at 800 MHz most of the
time,
but I think that's because the stats don't roll over on reboot. It shows I'm
using
the Debian kernel most of the time.
--
To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
Archive: http://lists.debian.org/20131122111329.GA5843@tuzo
