On Fri, Jan 19, 2018 at 11:15 AM, Yaniv Kaul <ykaul@redhat.com> wrote:

On Jan 19, 2018 10:52 AM, "andreil1" <andreil1@starlett.lv> wrote:

Migration disabled.

Why this enforcing? If the VM is so important I see it as a limitation not to be able to move it in case of need

Pass-through host CPU enabled

I don't know if this is so important.

Tested with Oracle RDBMS and not used in my case.

Any idea of NUMA settings ?

Indeed. + Huge pages, in both host and guest.

Do you think NUMA so essential? It implies non-migratable VM...

In my tests I didn't set NUMA

In short, use high performance VM. See ovirt.org feature page.
Y.

In my opinion the main limitation of "High performance VM" is to be not-migratable (probably implied because you set NUMA?)

In that case could it be possible to have NUMA as choice, so that at the same time you can choose if you want a migratable or not-migratable high performance VM?

Also CPU passthrough, I don't remember if it is included/fixed option in high perf VM...

Gianluca