Is there any way to co-locate two instances on a single physical core on a compute node?

Question

I'm gonna create a new flavor with --vcpus attribute set to 1 and set the --property hw:cpu_policy to dedicated so any instance launched with that flavor would be pinned on a fixed physical core on that host. I also assume if I make a host aggregate then another newly launched instance enter code herein that host aggregate & with the same flavor as first instance would be located beside the first one on the same physical core.

Now I wounded if there's any way that I could check if they'd actually been located on the same physical core or not. So far all the command I came into just display the host node on which instances has been placed but not the specific physical core.

If I'm lost on the topic please any idea how I could have co-located instances on a single physical core?

Answer 1

It seems no one is interested in the topic, well there is this virsh command that one can run on the host an instance is placed on and get variety of informations. For my purpose virsh dumpxml <instance id> | grep vcpupin is helpful.