Interval Transfer Bandwidth Total Datagrams In my case, the system is able to send ~16gbps of traffic to itself. Of course we expect this to fail, but the nice part here is that we will understand the breaking point of the system’s ability to process traffic. Here we’re asking the system to send itself 100gbps of traffic. Here for the “self-test” we’re not sending out anything over a wire… we’re effectively using an internal loopback here. Use another terminal on the same machine to start the client connection. Start the Iperf server in one terminal with: $ iperf3 -s In my case I just ran a bit of Iperf testing against the machine itself. If you don’t have a computer with two NICs or you want to simplify your life a little bit… by all means please do that, use a separate machine if you have one– but make sure it’s sufficiently strong. This means my computer is going to talk to itself to test the link.
In my case, my laptop is a Thinkpad P52 and still has a physical gigabit ethernet port - hoorah! - so I’m actually going to setup a physical loopback cable from my physical motherboard gigabit ethernet adapter to my USB3.0 gigabit ethernet adapter. There are a few goals in this post but the primary goal is to test that the shiny new USB3.0 gigabit ethernet adapter which has been purchased, can actually push 1gbps of traffic.
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