Comment 6 for bug 1904736

Changed bug to Opinion.

I believe that:
1) charm description of the setting could point to OVS memory cacluclator at https://docs.openvswitch.org/en/latest/topics/dpdk/memory/#example-4
2) Openstack deployment guide at https://docs.openstack.org/project-deploy-guide/charm-deployment-guide/latest/app-ovn.html could also say word or two on this topic as it is rather terse now:
----
By default, the charm will configure Open vSwitch/DPDK to consume one processor core + 1G of RAM from each NUMA node on the unit being deployed. This can be tuned using the dpdk-socket-memory and dpdk-socket-cores configuration options. The userspace kernel driver can be configured using the dpdk-driver configuration option. See config.yaml for more details.
----
That could point to https://docs.openvswitch.org/en/latest/topics/dpdk/memory/ for dpdk-socket-memory size tuning.