[pve-devel] pve-kernel : set CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE value

Alexandre DERUMIER aderumier at odiso.com
Thu Apr 10 08:14:17 CEST 2014


>>so what exactly is 'ONDEMAND'? 

ONDEMAND, is auto dynamic cpu frequency when you need it.

for example, at start frequency is low (power saving), but when you run a compilation, the frequency increase.

But this can give us clock problem (not to much a problem in linux guest with kvm-clock I think), but in windows guest, I can crash the vm.



----- Mail original ----- 

De: "Dietmar Maurer" <dietmar at proxmox.com> 
À: "Alexandre DERUMIER" <aderumier at odiso.com>, "pve-devel" <pve-devel at pve.proxmox.com> 
Envoyé: Jeudi 10 Avril 2014 08:06:27 
Objet: RE: [pve-devel] pve-kernel : set CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE value 

> I think we should setup 
> 
> CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y 
> 
> by default, to force it 

/boot/config-2.6.32-28-pve:CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y 
/boot/config-3.10.0-1-pve:CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y 

so what exactly is 'ONDEMAND'? 


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