Good morning, before we purchase any network upgrades we want to gather some bandwidth results. Upon using iPerf3 today, my results directly to the file server were good, avg. 930+ Mbits/s on a 1Gbe hardware infrastructure, however when I put iPerf3 into UDP mode the results were quite drastic, my bandwidth went to 1.05Mbits/s. This cannot be normal.
Seems to be a known phenomenon: performance - Why is UDP slower than TCP on Ubuntu Server? - Server Fault
Well onething I discovered iPerf3 defaults to 1Mbit/s for testing, I needed to add the switch -b 0 to make it default to what TCP uses, results ended up being slightly faster than TCP.