Better Ethernet benchmark numbers and possibly real world performance

[ThomasKaiser]

Hi guys,

please take notice: http://forum.armbian.com/index.php/topic/1285-nanopi-m3-cheap-8-core-35/?view=getlastpost

A single line added to /etc/rc.local might improve Ethernet benchmark scores on NanoPi M2/M3 and NanoPC T2/T3. I leave it up to you to do some further investigations regarding possible drawbacks and want to encourage you checking whether you can disable eth0 IRQ distribution or at least test this whether assigning them statically to specific CPU cores further helps with improving performance.

[friendlyarm]

Thank you very much for your suggestion. We will investigate this issue and try to improve Ethernet performance.