First, the command and it's output: # cpupower -c all frequency-info analyzing CPU 0: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 10.0 us. hardware limits: 1.20 GHz - 2.67 GHz available frequency steps: 2.67 GHz, 2.67 GHz, 2.53 GHz, 2.40 GHz, 2.27 GHz, 2.13 GHz, 2.00 GHz, 1.87 GHz, 1.73 GHz, 1.60 GHz, 1.47 GHz, 1.33 GHz, 1.20 GHz available cpufreq governors: conservative, userspace, powersave, ondemand, performance current policy: frequency should be within 1.20 GHz and 2.67 GHz. The governor "userspace" may decide which speed to use within this range. current CPU frequency is 2.67 GHz (asserted by call to hardware). boost state support: Supported: yes Active: yes 2200 MHz max turbo 2 active cores 2400 MHz max turbo 1 active cores analyzing CPU 1: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 1 CPUs which need to have their frequency coordinated by software: 1 maximum transition latency: 10.0 us. hardware limits: 1.20 GHz - 2.67 GHz available frequency steps: 2.67 GHz, 2.67 GHz, 2.53 GHz, 2.40 GHz, 2.27 GHz, 2.13 GHz, 2.00 GHz, 1.87 GHz, 1.73 GHz, 1.60 GHz, 1.47 GHz, 1.33 GHz, 1.20 GHz available cpufreq governors: conservative, userspace, powersave, ondemand, performance current policy: frequency should be within 1.20 GHz and 2.67 GHz. The governor "userspace" may decide which speed to use within this range. current CPU frequency is 2.67 GHz (asserted by call to hardware). boost state support: Supported: yes Active: yes 2200 MHz max turbo 2 active cores 2400 MHz max turbo 1 active cores analyzing CPU 2: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 2 CPUs which need to have their frequency coordinated by software: 2 maximum transition latency: 10.0 us. hardware limits: 1.20 GHz - 2.67 GHz available frequency steps: 2.67 GHz, 2.67 GHz, 2.53 GHz, 2.40 GHz, 2.27 GHz, 2.13 GHz, 2.00 GHz, 1.87 GHz, 1.73 GHz, 1.60 GHz, 1.47 GHz, 1.33 GHz, 1.20 GHz available cpufreq governors: conservative, userspace, powersave, ondemand, performance current policy: frequency should be within 1.20 GHz and 2.67 GHz. The governor "userspace" may decide which speed to use within this range. current CPU frequency is 2.67 GHz (asserted by call to hardware). boost state support: Supported: yes Active: yes 2200 MHz max turbo 2 active cores 2400 MHz max turbo 1 active cores analyzing CPU 3: driver: acpi-cpufreq CPUs which run at the same hardware frequency: 3 CPUs which need to have their frequency coordinated by software: 3 maximum transition latency: 10.0 us. hardware limits: 1.20 GHz - 2.67 GHz available frequency steps: 2.67 GHz, 2.67 GHz, 2.53 GHz, 2.40 GHz, 2.27 GHz, 2.13 GHz, 2.00 GHz, 1.87 GHz, 1.73 GHz, 1.60 GHz, 1.47 GHz, 1.33 GHz, 1.20 GHz available cpufreq governors: conservative, userspace, powersave, ondemand, performance current policy: frequency should be within 1.20 GHz and 2.67 GHz. The governor "userspace" may decide which speed to use within this range. current CPU frequency is 2.67 GHz (asserted by call to hardware). boost state support: Supported: yes Active: yes 2200 MHz max turbo 2 active cores 2400 MHz max turbo 1 active cores
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So, question:
How can current frequency be 2.67GHz, but turbo ferequency for one cpu running be 2.4GHz? How can that be turbo???
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JD