On openSUSE 11.2 on a desktop computer (not a laptop), I ran cpufreq-info to see what speed my processor was running at. The system was doing things, so I would imagine it would be set to a higher frequency. But that seems not to be the case.
cpufreq-info lists (same for all CPUs):
analyzing CPU 0: driver: acpi-cpufreq CPUs which need to switch frequency at the same time: 0 hardware limits: 1.60 GHz - 2.40 GHz available frequency steps: 2.40 GHz, 1.60 GHz available cpufreq governors: conservative, userspace, powersave, ondemand, performance current policy: frequency should be within 1.60 GHz and 2.40 GHz. The governor "userspace" may decide which speed to use within this range. current CPU frequency is 1.60 GHz (asserted by call to hardware).
So I tried setting it to 2.4 GHz to see if that happened:
# cpufreq-info -w 1596000
# cpufreq-set -f 2.4GHz
# cpufreq-info -w 2400000
My question is: how/where should I set it so the CPU frequency is increased when there is system load? I am guessing it is the 'ondemand' governor that should be selected. But where? I did not see any likely place in /etc/sysconfig or in an /etc/init.d script.
had some to say, but did not really satisfy my curiosity. I am guessing that the default is set to 'powersave'. Does that sound correct?
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