Public bug reported:

Hello,

After a month of work, with countless hours and problems debugging, I
finally had something working with openstack-ansible (branch master) and
Ubuntu 20.04 deploy and infra/compute nodes.

I have took Ussuri release with Ubuntu 20.04.  Everything (except heat
and Designate) is working ok.  But I'm experimenting a pretty high load
while the three computes have only one instance, running basically only
top.

Rabbitmq has high load, so is mariadb and even haproxy.  Like I said,
nothing is running in the stack beside one instances running top.  I've
been trying to figure out why all the CPU cicles are taken but I haven't
been able to find the source.  The systems have 8 cores and 64GB of RAM.

Is that a bug on the current release?  Is there something I can do?

** Affects: openstack-ansible
     Importance: Undecided
         Status: New

** Affects: ubuntu
     Importance: Undecided
         Status: New

** Attachment added: "screenshot of top command"
   
https://bugs.launchpad.net/bugs/1909843/+attachment/5448652/+files/2021-01-01%2023_13_16-Window.png

** Project changed: fuel-plugin-contrail => ubuntu

** Also affects: openstack-ansible
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1909843

Title:
  high CPU usage when running nothing

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