How-To: Tune USB and Ethernet Speed on ODROID-XU4

From obihoernchen.net:

It’s time for another small blog about the ODROID-XU4.
This is just a quick tip to improve your network and USB performance even more. It will optimize your hardware interrupts (IRQ) affinity on your ODROID-XU4.

This guide is for the 3.10.y kernel and debian 8. For other kernel versions the interrupts may have different numbers [...]

There are basically 3 different interrupts on a headless ODROID-XU4 [or ODROID-HC1, ODROID-HC2, or ODROID-MC1] server you should take into consideration:

• the USB2 port
• the first USB3 port
• the second USB3 port (the 1 Gigabit ethernet adapter is connected to this one)

Per default all 3 interrupts for these devices are handled by CPU0, which is a A7 core [little core]

Read the rest of the article here.