Hi all,

Just recently deployed Openstack Queens onto an Ubuntu 18.04 LTS Server. Followed the guide doc(s) on the Openstack website.

Note that this is an all-in-one build.

After running htop to see the systems overall usage, I can see that there is really only one core of my 4-Core ( 8 Threads ) processor is completely maxed at 100% while running instance(s) with all other cores remaining underutilized.

I tested this with running instances with 2, and then 4 vCPUs - Which shows a similar result in CPU usage.

I tried increasing the property cpu_allocation_ratio in nova.conf, but nothing changed.

Any ideas on what the issue might be? Could this be an openstack issue or something else that I need to rectify.

Thanks in advance.