[pve-devel] pve-kernel: disable c-state by default

Alexandre DERUMIER aderumier at odiso.com
Thu Apr 10 08:16:01 CEST 2014


>>This will increase power consumption, so this is nothing I want to do by default.

Yes, It's power consumption vs stability


(But I can write a wiki article for example)

----- 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 08:11:30 
Objet: RE: [pve-devel] pve-kernel: disable c-state by default 

This will increase power consumption, so this is nothing I want to do by default. 

> same than for cpu gouvernor, we should disable c-states by default 
> 
> this can be done with kernel boot parameter 
> 
> intel_idle.max_cstate=0 processor.max_cstate=1 idle=poll 
> 
> 
> intel_idle.max_cstate=0 can be also done by disabling CONFIG_INTEL_IDLE=n 
> (maybe other parameter can be done by a kernel patch ?) 
> 
> 
> more informations: 
> 
> https://access.redhat.com/site/articles/65410 


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