Comment 7 for bug 1325762

Repeated above test using similar hardware but with much newer firmware and running Trusty. Actually runs slightly slower than before (approx 25s each, or only about 4.5MB/s).

# ethtool -i eth3
driver: mlx4_en
version: 2.2-1 (Feb 2014)
firmware-version: 2.9.1530
bus-info: 0000:05:00.0
supports-statistics: yes
supports-test: yes
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no

ProLiant SL390s G7 with P69 BIOS:

Results, transferring same 111MB file over TFTP:

real 0m25.008s
real 0m25.005s
real 0m25.005s

There's clearly something wrong here. The same file transferred over HTTP takes only 0.4s.