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

[Dietmar Maurer]

> Am 23.07.2018 um 21:04 schrieb 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.
> 
> Yes the problem is or might be. Most users will overcommit the cpu cores
> with VMs. So theoretically the kvm processes might eat ALL CPU cores.

Really? I though we have a scheduler that give all processes a change to run.

> But while running ceph on the same node this should NEVER happen. So my
> idea is to give cores exclusively to ceph.

Why exclusively? A scheduler can prioritize specific processes.