14:28 <Simon1978> Hi guys, i got problems with my odroid c2 and latest mainline kernel. Im stuck at 650Mbits/150Mbits (dont know which is tx and rx) when testing with iperf2 in duplex. Are there any issues known or can anyone repeat tests ?

16:43 <narmstrong> Simon1978: can you be more specific about the kernel version

16:44 <narmstrong> Simon1978: and if you built it yourself or got from a distrib

16:44 <narmstrong> We effectively have a regression since 4.14 and we are unable to find the root cause

18:27 <Simon1978> @narmstrong im using 5.0.rc7 and i build it myself ( im using self build kernels on my odroid c2 for a LOOONG time). i made a test back to 4.14.29 where the performance was "ok"

18:28 <narmstrong> Simon1978: is it pure vanilla or patched ?

18:28 <Simon1978> vanilla

18:29 <Simon1978> usually i was getting 900MBits in one direction and around 600 or 700 which duplex in BOTH directions ... but this changed recently

18:30 <Simon1978> now its around 700MBits in one and 150MBits in the other when doing duplex tests

18:30 <narmstrong> Simon1978: can you revert the odroic2 part of 8b3e6f8999f8d704fccce225b9455b3fa639d1c9 ?

18:30 <narmstrong> And full revert

18:30 <narmstrong> I think removal of eee-broken was a mistake

18:31 <Simon1978> do you mean the irq trigger type or the EEE stuff ? i disabled EEE in the dtb for testing but the results didnt change

18:31 <Simon1978> the only difference after disable of EEE was that i dont get these "irq in LPI" counts anymore but performance was still bad

19:46 <Simon1978> why is the problem mostly appearing in duplex ? is this happening for all stmmac users or only certain ?