[PVE-User] CPU freq scale in PVE 6.0

Alexandre DERUMIER aderumier at odiso.com
Mon Jan 27 08:29:56 CET 2020


what is your cpu / motherboard / server model ?


----- Mail original -----
De: "José Manuel Giner" <jm at ginernet.com>
À: "proxmoxve" <pve-user at pve.proxmox.com>
Envoyé: Dimanche 26 Janvier 2020 12:40:43
Objet: Re: [PVE-User] CPU freq scale in PVE 6.0

I edited /etc/default/grub 
Updated with update-grub command 
Checked that /boot/grub/grub.cfg has been updated correctly 
But after reboot nothing has changed, 
freq is still btw 1.20 and 3.60 GHz 

Any idea how to fix? 


On 23/01/2020 20:38, Alexandre DERUMIER wrote: 
> 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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