[Feature Request] Include total memory used by all container in a swarm cluster

[marcelo-ochoa]

In order to known in advance if a swarm cluster can manage a new stack deploy it will be great to have a total memory of all containers running into the swarm cluster.
I mean in a pane:

include another row with the summarize information of the memory used by all container running at the swarm cluster, for example:

Total memory used by all containers 20.51 Gb

obviously this information must be computed asking all agents for running container and for each container running gets memory used like in the container statistics pane:

This information will be great for DC operators.
Best regards, Marcelo.

[aiminickwong]

Also wanna add summarize information of the CPU usage