Smoltcp Test Example

This scenario runs three dataplane nodes and uses controller-defined flows to test scheduling behavior. examples/smoltcp-test/controller-config.toml sets scheduler_type = "wrr", applies a link rate from node 1 to node 2, and defines two long flows from node 1 to node 2 with weights 1 and 2.

From the repository root:

cd examples/smoltcp-test
docker compose build
docker compose up

Check that all services are healthy and all dataplane nodes are registered:

docker compose ps
docker exec postgres psql -U pgusr -d nextmini -c "SELECT COUNT(*) AS nodes_connected FROM nodes;"

The expected node count is 3.

To confirm the test inputs before or after a run:

rg -n "scheduler_type|flow_weight|rate =|bucket_size" controller-config.toml

You can also confirm basic reachability between the two flow endpoints:

docker exec node1 ping -c 3 10.0.0.2

Stop the containers when done:

docker compose down