frequency-info -------------- analyzing CPU 28: driver: intel_pstate CPUs which run at the same hardware frequency: 28 CPUs which need to have their frequency coordinated by software: 28 maximum transition latency: Cannot determine or is not supported. hardware limits: 800 MHz - 3.90 GHz available cpufreq governors: performance powersave current policy: frequency should be within 800 MHz and 3.90 GHz. The governor "powersave" may decide which speed to use within this range. current CPU frequency: Unable to call hardware current CPU frequency: 3.90 GHz (asserted by call to kernel) boost state support: Supported: yes Active: yes idle-info --------- CPUidle driver: intel_idle CPUidle governor: menu analyzing CPU 19: Number of idle states: 4 Available idle states: POLL C1_ACPI C2_ACPI C3_ACPI POLL: Flags/Description: CPUIDLE CORE POLL IDLE Latency: 0 Usage: 895 Duration: 48778 C1_ACPI: Flags/Description: ACPI FFH MWAIT 0x0 Latency: 1 Usage: 19736 Duration: 2748360 C2_ACPI: Flags/Description: ACPI FFH MWAIT 0x21 Latency: 127 Usage: 27351 Duration: 22242187 C3_ACPI: Flags/Description: ACPI FFH MWAIT 0x60 Latency: 1048 Usage: 32691 Duration: 2587519873