AMD EPYC 7713 64-Core: cannot enable turbo boost

[Antonio Di Bacco]

That's fantastic:

# sudo cpupower -c 99 frequency-info info
analyzing CPU 99:
  driver: acpi-cpufreq
  CPUs which run at the same hardware frequency: 99
  CPUs which need to have their frequency coordinated by software: 99
  maximum transition latency:  Cannot determine or is not supported.
  hardware limits: 1.50 GHz - 3.72 GHz
  available frequency steps:  2.00 GHz, 1.70 GHz, 1.50 GHz
  available cpufreq governors: conservative ondemand userspace powersave
performance schedutil
  current policy: frequency should be within 1.50 GHz and 3.72 GHz.
                  The governor "userspace" may decide which speed to use
                  within this range.
  current CPU frequency: 2.00 GHz (asserted by call to hardware)
  boost state support:
    Supported: yes
    Active: yes
    Boost States: 0
    Total States: 3
    Pstate-P0:  2000MHz
    Pstate-P1:  1700MHz
    Pstate-P2:  1500MHz

Il giorno mar 26 apr 2022 alle ore 12:00 Tummala, Sivaprasad <
Sivaprasad.Tummala at amd.com> ha scritto:

> [AMD Official Use Only - General]
>
>
>
> Hi Antonio,
>
>
>
> We are looking into this. Could you please share the below info:
>
> # cpupower -c <lcore> frequency-info info
>
> analyzing CPU <lcore>:
>
>   driver: acpi-cpufreq
>
>
>
>
>
> *From:* Antonio Di Bacco <a.dibacco.ks at gmail.com>
> *Sent:* Monday, April 25, 2022 10:43 PM
> *To:* users at dpdk.org
> *Subject:* AMD EPYC 7713 64-Core: cannot enable turbo boost
>
>
>
> [CAUTION: External Email]
>
> Trying to enable turbo boost on EPYC 7713 with this APIS:
>
>
>
>   rte_power_init(lcore)
>   rte_power_freq_enable_turbo(lcore)
>  rte_power_freq_max(lcore)
>
>
>
>  I receive this messages:
>
>
>
> DPDK:POWER: Env isn't set yet!
> DPDK:POWER: Attempting to initialise ACPI cpufreq power management...
> DPDK:POWER: Power management governor of lcore 99 has been set to
> 'userspace' successfully
> DPDK:POWER: Initialized successfully for lcore 99 power management
> DPDK:POWER: Failed to enable turbo on lcore 99
>
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