[pve-devel] Hyperconverged Cloud / Qemu + Ceph on same node

[Alexandre DERUMIER]

Personally, I think that a vm could take all cpu usage, or memory, and impact ceph cluster for other vms.

we should give ceph some kind of (configurable) priority.


----- Mail original -----
De: "dietmar" <dietmar at proxmox.com>
À: "pve-devel" <pve-devel at pve.proxmox.com>, "aderumier" <aderumier at odiso.com>
Envoyé: Lundi 23 Juillet 2018 20:53:19
Objet: Re: [pve-devel] Hyperconverged Cloud / Qemu + Ceph on same node

I am not sure CPU pinning helps. What problem do you want to solve 
exactly? 

> maybe could we use cgroups ? (in ceph systemd units) 
> 
> we already use them fo vm && ct (shares cpu option for priority) 
> 
> 
> ----- Mail original ----- 
> De: "Stefan Priebe, Profihost AG" <s.priebe at profihost.ag> 
> À: "pve-devel" <pve-devel at pve.proxmox.com> 
> Envoyé: Lundi 23 Juillet 2018 13:49:17 
> Objet: [pve-devel] Hyperconverged Cloud / Qemu + Ceph on same node 
> 
> Hello, 
> 
> after listening / reading: 
> https://www.openstack.org/videos/vancouver-2018/high-performance-ceph-for-hyper-converged-telco-nfv-infrastructure 
> 
> and 
> https://www.youtube.com/watch?v=0_V-L7_CDTs&feature=youtu.be 
> and 
> https://arxiv.org/pdf/1802.08102.pdf 
> 
> I was thinking about creating a Proxmox based Cloud with Ceph on the 
> same nodes as proxmox. 
> 
> What i'm missing is HOW do i get automatic CPU pinning for Qemu and 
> Ceph? How can they live in parallel without manually adjusting cpu 
> pinning lists? Has anybody already tried it? 
> 
> Greets, 
> Stefan 
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