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On Thu, 24 Apr 2014 10:13:39 +0100, Neil Bothwick wrote: |
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> On Thu, 24 Apr 2014 02:27:05 -0400, Walter Dnes wrote: |
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> |
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>> [aa1][root][/usr/src/linux] /etc/init.d/cpufrequtils start |
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>> * Caching service dependencies ... [ ok ] |
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>> * Running cpufreq-set --governor conservative -- ... |
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>> /usr/libexec/cpufrequtils-change.sh: line 26: cd: |
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>> /sys/devices/system/cpu/cpufreq: No such file or directory [ !! ] |
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>> * ERROR: cpufrequtils failed to start |
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> |
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> I get a similar message, it appears to be looking in the wrong place. |
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> |
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> /sys/devices/system/cpu/cpufreq does not exist but |
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> /sys/devices/system/cpu/cpu{0..3}/cpufreq do |
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It depends on the CPU frequency governor. If CONFIG_X86_INTEL_PSTATE is |
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set and active (depending on your CPU model), the traditional governors |
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(like ondemand) and their correspondig sysfs entries are disabled. |
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For example I have the former (cpufreq) entry on my old core2 laptop, |
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but no such entry on my machines with i5/i7 with pstate despite the same |
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3.12.x kernel everywhere. |
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Generally pstate is much better than ondemand for both performance and |
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especially powersave mode. |
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Also AFAIK cpufrequtils are unmaintained/deprecated/dead, you should |
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migrate to sys-power/cpupower. It's slightly different but IIRC easy |
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to switch to. |
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|
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-h |