The goal of this script is to measure the performance when using Open vSwitch's internal ports and Linux veth devices to connect network namespaces like conntainers do. For that, it will create a pair of namespaces and establish a network between them using Open vSwitch bridge and then execute some netperf tests in the testing environment.
Of course, measuring performance is a complex task and this script does some work to compare apples to apples and also to get more stable numbers, but still it's far from being complete. It's also limited to netperf tests which is just one artificial way of measure throughput and latency.