Update: I tested with Armbian/Xenial, Armbian/Jessie and Jessie from official download location (pine64.pro tampered by Pine64 folks):
Reasons for that pretty simple: iperf is the wrong tool, iperf behaves differently on Xenial/Jessie and both test execution time as well as cpufreq governor matters. Everything outlined in detail in Armbian forum, just check the link above.
So without having all this in mind your Ethernet performance results are just numbers without meaning and by having a closer look what's important anyone is able to improve Gbit Ethernet performance easily.
Please also note that I still reliably power my Pine64+ (Euler connector and not Micro USB) so in case you get weird throughput results or GbE is not working at all please think about trying this out first.
Code:
TX RX
Armbian Xenial @ 1152 MHz: 920 / 940 Mbits/sec
Armbian Jessie @ 1152 MHz: 920 / 810 Mbits/sec
pine64.pro Jessie @ 1152 MHz: 740 / 770 Mbits/secReasons for that pretty simple: iperf is the wrong tool, iperf behaves differently on Xenial/Jessie and both test execution time as well as cpufreq governor matters. Everything outlined in detail in Armbian forum, just check the link above.
So without having all this in mind your Ethernet performance results are just numbers without meaning and by having a closer look what's important anyone is able to improve Gbit Ethernet performance easily.
Please also note that I still reliably power my Pine64+ (Euler connector and not Micro USB) so in case you get weird throughput results or GbE is not working at all please think about trying this out first.