[libvirt] [Qemu-devel] [PATCH 1/2] numa: deprecate 'mem' parameter of '-numa node' option

[Michal Privoznik]

On 3/4/19 4:19 PM, Igor Mammedov wrote:

> Then I'd guess that most VMs end up with default '-numa node,mem'
> which by design can produce only fake NUMA without ability to manage
> guest RAM on host side. So such VMs aren't getting performance benefits
> or worse run with performance regression (due to wrong sched/mm decisions
> as guest kernel assumes NUMA topology is valid one).

Specifying NUMA distances in libvirt XML makes it generate the modern 
cmd line.

Michal