As I see for your issue https://bugs.launchpad.net/neutron/+bug/1959750 and https://review.opendev.org/c/openstack/neutron/+/829022 is the solution (with too many server-agent interactions), https://launchpad.net/bugs/1952730 and https://review.opendev.org/c/openstack/neutron/+/819777 fixes db overload.
As I see for your issue https:/ /bugs.launchpad .net/neutron/ +bug/1959750 and https:/ /review. opendev. org/c/openstack /neutron/ +/829022 is the solution (with too many server-agent interactions), https:/ /launchpad. net/bugs/ 1952730 and https:/ /review. opendev. org/c/openstack /neutron/ +/819777 fixes db overload.