TurboBoost doesn't work on RHOCP4.8 CoreOS node

Solution Unverified - Updated -

Issue

  • TurboBoost doesn't work with acpi-cpufreq driver on RHOCP4.8 CoreOS node
# cpupower 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: 800 MHz - 2.60 GHz <<-------
    available frequency steps:  2.60 GHz, 2.60 GHz, 2.50 GHz, 2.30 GHz, 2.20 GHz, 2.10 GHz, 2.00 GHz, 1.80 GHz, 1.70 GHz, 1.60 GHz, 1.40 GHz, 1.30 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 2.60 GHz. <<-------
                    The governor "performance" may decide which speed to use
                    within this range.
    current CPU frequency: 2.60 GHz (asserted by call to hardware)
    boost state support:
      Supported: yes
      Active: yes
  • On the other hand, it works with intel_pstate driver on other node:
$ 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:  Cannot determine or is not supported.
  hardware limits: 800 MHz - 3.50 GHz <<-------
  available cpufreq governors: performance powersave
  current policy: frequency should be within 800 MHz and 3.50 GHz. <<-------
                  The governor "powersave" may decide which speed to use
                  within this range.
  current CPU frequency: Unable to call hardware
  current CPU frequency: 800 MHz (asserted by call to kernel)
  boost state support:
    Supported: yes
    Active: yes

Environment

  • Red Hat OpenShift Container Platform 4.8
    • CoreOS release 4.8: kernel-4.18.0-305.28.1.el8_4
    • Dell PowerEdge R750
    • Intel(R) Xeon(R) Gold 6348 CPU @ 2.60GHz

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