You can check which families are supported by an oVirt Host via:virsh domcapabilities | xmllint --xpath '/domainCapabilities/cpu' - For the instruction set - it all depends on the app. Set your VM with the cluster's top notch CPU , run your app and note down the performance indicators. Once the test is over, shitdown the VM, set the CPU to host-passthrough and test again. Best Regards,Strahil Nikolov On Mon, Jan 23, 2023 at 15:19, Laurent Duparchy<duparchy@esrf.fr> wrote: _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-leave@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/TNLZJSGJTSCT6Y...