Subpar Performance, Link State (not) Down, Intermittent iPerf3 Connection

[sudo_apt-get_brain]

@sudo_apt-get_brain

Issues: I’m getting 1-11 MB/s on data transfer between my PC and the SMB share folder while transferring one large video file. Given the drive performances in this pool I’d expect close to 300 MB/s or near the 1GbE NIC limit. Transfer speeds fluctuate significantly. The Interface shows LINK STATE DOWN on the dashboard despite being able to connect to the share. Yesterday, iPerf3 was unable to run, error iperf3: error - failed to read /dev/urandom: Bad address after accepting connection from the client. Unable to diagnose. Today, iPerf3 works fine, showing 40Mb/s (why so low?), then reverts back to Bad Address error after an autologout from the web GUI.

Summary of solutions:

1. Transfer speeds: Connection to 2.5Gb port on router was causing issues. Speeds stabilized when moved to 1Gb port.
2. iperf3: It Just Worked, eventually. (I really didn’t change anything that seemed to have any effect)
3. Drive Performance: Run more applicable tests and know what/how/why you’re testing.