It’s always easy to install official software under Windows, with the most-updated features provided by the software, and auto-update, whatever. Nonetheless, only the geeks are able to install the same software under Ubuntu.
Recently, I have bought an APU and wanted to test it under Ubuntu to see how power it will be under Linux environment. Today, I have installed Ubuntu 12.04 and found that the catalyst control center doesn’t provide a function to adjust the maximum CPU usage (Which is a feature of Cool’n’Quiet).
I tried to locate the word ‘CPU power’ and ‘CPU performance’ in the catalyst control centre but nothing shows up.
So, I gotta install a thir-party software to limit the maximum CPU usage. Then, I got ‘cpufrequtils’ through hours of googling.
Installation and Configuration log
1. Install cpufrequtils
apt-get install cpufrequtils
2. Configure cpufrequtils
sudo gedit '/etc/init.d/cpufrequtils'
2.1 Set up with the following content
3. Restarted cpufrequtils
4. Test the result
Then, you should see the following output:
current policy: frequency should be within 800 MHz and 1.50 GHz. The governor "ondemand" may decide which speed to use within this range.
If you want to see the difference before-and-after, you can check out the temperature difference. (As there’s no way to check the CPU clock-rate using any pre-installed Ubuntu apps)
In this case, I use psensor to check the temperature.