[PVE-User] CPU freq scale in PVE 6.0

Alexandre DERUMIER aderumier at odiso.com
Thu Jan 23 20:38:37 CET 2020


Hi,
I'm setup this now for my new intel processors:

/etc/default/grub

GRUB_CMDLINE_LINUX="intel_idle.max_cstate=0 intel_pstate=disable processor.max_cstate=1"



----- Mail original -----
De: "José Manuel Giner" <jm at ginernet.com>
À: "proxmoxve" <pve-user at pve.proxmox.com>
Envoyé: Jeudi 23 Janvier 2020 15:34:47
Objet: [PVE-User] CPU freq scale in PVE 6.0

Hello, 

Since PVE 6.0, we detect that the CPU frequency is dynamic even if the 
governor "performance" is selected. 

How can we set the maximum frequency in all the cores? 

Thank you. 


root at ns1031:~# cat /proc/cpuinfo | grep MHz 
cpu MHz : 1908.704 
cpu MHz : 1430.150 
cpu MHz : 1436.616 
cpu MHz : 1433.659 
cpu MHz : 1547.050 
cpu MHz : 2299.611 
cpu MHz : 2931.782 
cpu MHz : 3321.946 
cpu MHz : 3397.896 
cpu MHz : 3401.725 
cpu MHz : 3401.701 
cpu MHz : 3170.021 
cpu MHz : 2502.847 
cpu MHz : 1534.596 
cpu MHz : 2969.438 
cpu MHz : 3435.646 
cpu MHz : 1992.717 
cpu MHz : 2922.292 
cpu MHz : 2917.282 
cpu MHz : 2921.654 
cpu MHz : 2484.807 
cpu MHz : 1866.995 
cpu MHz : 1629.151 
cpu MHz : 2841.298 
cpu MHz : 3404.503 
cpu MHz : 3401.732 
cpu MHz : 3406.120 
cpu MHz : 2189.093 
cpu MHz : 1545.454 
cpu MHz : 3348.573 
cpu MHz : 1564.159 
cpu MHz : 3438.787 
root at ns1031:~# 
root at ns1031:~# 
root at ns1031:~# 
root at ns1031:~# 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: 1.20 GHz - 3.60 GHz 
available cpufreq governors: performance powersave 
current policy: frequency should be within 1.20 GHz and 3.60 GHz. 
The governor "performance" may decide which speed to use 
within this range. 
current CPU frequency: Unable to call hardware 
current CPU frequency: 1.90 GHz (asserted by call to kernel) 
boost state support: 
Supported: yes 
Active: yes 
root at ns1031:~# 
root at ns1031:~# 



-- 
José Manuel Giner 
https://ginernet.com 

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