How to force all CPU cores to run at maximum turbo boost frequency?
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My goal is to force all CPU cores to run at maximum turbo frequency (4 x 3.9 GHz) using CentOS 7. Here is the output of
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: 1.60 GHz - 3.50 GHz
available frequency steps: 3.50 GHz, 3.50 GHz, 3.30 GHz, 3.10 GHz, 2.90 GHz, 2.70 GHz, 2.50 GHz, 2.30 GHz, 2.10 GHz, 1.90 GHz, 1.70 GHz, 1.60 GHz
available cpufreq governors: conservative userspace powersave ondemand performance
current policy: frequency should be within 1.60 GHz and 3.50 GHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency: 3.50 GHz (asserted by call to hardware)
boost state support:
Supported: yes
Active: yes
3600 MHz max turbo 4 active cores
3700 MHz max turbo 3 active cores
3800 MHz max turbo 2 active cores
3900 MHz max turbo 1 active cores
Turbo boost is working as expected - all 4 cores fully loaded are reaching 3.6 GHz. But it would be nice to have 3900 MHz max turbo 4 active cores
or less (at least 4 x 3.7 GHz). How to control it?
Is it possible?
Asked by Ernestas Gruodis
(217 rep)
Mar 20, 2018, 09:17 AM
Last activity: Mar 20, 2018, 01:57 PM
Last activity: Mar 20, 2018, 01:57 PM