xray + armbian = slow? (中文也行！）

[alcatraz-zz]

I opened an issue and got one suggestion before it was closed. I'm hoping this discussion can stay open long enough to try more ideas. Thanks!

Hey fellas

I have FOUR different armbian devices that seem to all struggle with xray and throughput at high latency. It is not a cpu issue.

I run the normal reality script and then I do the 优化 "204" setting to improve congestion etc (works well on x86) but it remains slow at high latency. (I tried the xhttp script too and no improvement.)

If I connect an ethernet usb dongle, like rtl8152b I get the full throughput even at high latency. What??? So it's a nic issue?

I thought maybe the onboard ethernet isn't well supported by the kernel so I got a nanopi neo4 with onboard realtek gigabit .... AND it's slow too. Anything onboard with armbian is slow.

With slow I mean that a single connection gets 5-10Mbit. With a dongle I can get up to 100Mbit on a single connection.

Why is a usb realtek dongle better supported than onboard realtek gigabit? I don't get it. Does anybody have an idea I could try?

What's really difficult is that the problem only shows up at high latency. If I set up a new device at home I get full throughput, but when it's in another country 200-300ms latency it just slows down to 5-10Mbit.

Thanks for helping me figure it out. Love your work!

(user Fangliding suggested I try set bufferSize to 512. It didn't fix my problem. I tried many bufferSize from 16 to 10240.)