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- $ cpupower frequency-info
- analyzing CPU 0:
- driver: intel_pstate
- CPUs which run at the same hardware frequency: 0
- CPUs which need to have their frequency coordinated by software: 0
- maximum transition latency: 0.97 ms.
- hardware limits: 800 MHz - 2.60 GHz
- available cpufreq governors: performance, powersave
- current policy: frequency should be within 1000 MHz and 2.60 GHz.
- The governor "performance" may decide which speed to use
- within this range.
- current CPU frequency is 800 MHz.
- boost state support:
- Supported: yes
- Active: yes
- 25500 MHz max turbo 4 active cores
- 25500 MHz max turbo 3 active cores
- 25500 MHz max turbo 2 active cores
- 25500 MHz max turbo 1 active cores
- $ sudo cpupower frequency-set -f 2.60GHz
- Setting cpu: 0
- Error setting new values. Common errors:
- - Do you have proper administration rights? (super-user?)
- - Is the governor you requested available and modprobed?
- - Trying to set an invalid policy?
- - Trying to set a specific frequency, but userspace governor is not available,
- for example because of hardware which cannot be set to a specific frequency
- or because the userspace governor isn't loaded?
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