Parece que no meu laptop (um Ideapad da Lenovo com um i5 7200U) o Intel Turbo Boost continua ficando desativado sempre que a CPU está sob carga.
$ 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: 400 MHz - 2.50 GHz
available cpufreq governors: performance powersave
current policy: frequency should be within 400 MHz and 2.50 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency: Unable to call hardware
current CPU frequency: 1.20 GHz (asserted by call to kernel)
boost state support:
Supported: yes
Active: yes
$ stress --cpu 1 &
$ 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: 400 MHz - 2.50 GHz
available cpufreq governors: performance powersave
current policy: frequency should be within 400 MHz and 2.50 GHz.
The governor "powersave" may decide which speed to use
within this range.
current CPU frequency: Unable to call hardware
current CPU frequency: 2.50 GHz (asserted by call to kernel)
boost state support:
Supported: no
Active: no
Isso nem sempre acontece, mas mesmo que isso não aconteça (isto é, suporta suporte de estado suportado e ativo) a freqüência do processador não ultrapassa 2.50 Ghz, enquanto teoricamente deveria superar 3.10 Ghz neste processador. / p>