Comment 28 for bug 1672439

Kai-Heng Feng, I also noticed that by default the scaling driver used is acpi-cpufreq and not p-state. I've read that p-state is favorable for kernels >= 4.4. Is this something that is up to the user to decide or should this be considered an incorrect default?

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: 800 MHz - 2.80 GHz
  available frequency steps: 2.80 GHz, 2.80 GHz, 2.70 GHz, 2.60 GHz, 2.40 GHz, 2.30 GHz, 2.00 GHz, 1.90 GHz, 1.80 GHz, 1.70 GHz, 1.50 GHz, 1.40 GHz, 1.20 GHz, 1.10 GHz, 900 MHz, 800 MHz
  available cpufreq governors: conservative, ondemand, userspace, powersave, performance
  current policy: frequency should be within 800 MHz and 2.80 GHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency is 900 MHz (asserted by call to hardware).
  cpufreq stats: 2.80 GHz:2.85%, 2.80 GHz:0.00%, 2.70 GHz:0.25%, 2.60 GHz:0.64%, 2.40 GHz:0.65%, 2.30 GHz:1.42%, 2.00 GHz:2.07%, 1.90 GHz:1.27%, 1.80 GHz:1.64%, 1.70 GHz:3.14%, 1.50 GHz:3.57%, 1.40 GHz:5.39%, 1.20 GHz:6.85%, 1.10 GHz:13.39%, 900 MHz:29.31%, 800 MHz:27.53% (2074191)
  boost state support:
    Supported: yes
    Active: yes