I have one of these cards in each of two systems, one running Windows 10 and one running Ubuntu 20.04.
I'm getting the same speed on iperf3 whether the windows machine is server or host. Also whether parallel processes are being used with iperf3. A DAC is connecting the two machines.
Has anyone else tried bottlenecking these pcie3 x8 cards to x4 lanes via the use of an M.2 slot or other electrically x4 slot? I expected possibly to be held to 20Gbit but not under 10Gbit!
Oh and yes I have set the MTU to 9000 on both ends in the standard network manager settings on both OS's, but that's the only tweaking I've done. Perhaps I need to do more tweaking? Engaging jumbo packets did bring the speed up from 5.5Gbit to 6.5Gbit, I'll note.
Ohhhh I have not installed any mlnx drivers on the Ubuntu side, i guess that might be it??
I'm getting the same speed on iperf3 whether the windows machine is server or host. Also whether parallel processes are being used with iperf3. A DAC is connecting the two machines.
Has anyone else tried bottlenecking these pcie3 x8 cards to x4 lanes via the use of an M.2 slot or other electrically x4 slot? I expected possibly to be held to 20Gbit but not under 10Gbit!
Oh and yes I have set the MTU to 9000 on both ends in the standard network manager settings on both OS's, but that's the only tweaking I've done. Perhaps I need to do more tweaking? Engaging jumbo packets did bring the speed up from 5.5Gbit to 6.5Gbit, I'll note.
Ohhhh I have not installed any mlnx drivers on the Ubuntu side, i guess that might be it??