[pve-devel] pve-kernel from repos more recent that proxmox git ?

[Alexandre DERUMIER]

Hi, I didn't know for madvise.

I found this bug from redhat, they have remove madvise, but I don't know why
https://bugzilla.redhat.com/show_bug.cgi?id=636116

So I understand, with madvise, only application which support madvise can use it ?
So kvm support it but not openvz,vzdump or other process which can hang.

I could be a great solution. I'll try to find why redhat remove it....

- Alexandre




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

De: "Dietmar Maurer" <dietmar at proxmox.com> 
À: "Alexandre DERUMIER" <aderumier at odiso.com> 
Cc: pve-devel at pve.proxmox.com 
Envoyé: Mardi 10 Avril 2012 07:51:38 
Objet: RE: [pve-devel] pve-kernel from repos more recent that proxmox git ? 

> > > >> Maybe a stupid question, but can't we enable that only for KVM 
> processes? 
> > > I don't think it's possible. It's enable for the whole system. 
> > 
> > So why is there a MADV_HUGEPAGE flag? 
> > 
> > http://man7.org/linux/man-pages/man2/madvise.2.html 
> > 
> > We need to figure that out. 
> 
> Seems newer kernels have 3 options: 'always', 'never' and 'madvise' 
> 
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=blob;f=mm/huge_ 
> memory.c;h=f0e5306eeb55e8e179da3abbe6c033045b6ad073;hb=HEAD 
> 
> - Dietmar 

Here is the corresponding commit: 

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=13ece886d99cd668483113f7238e419d5331af26 

- Dietmar 




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