I'm currently using two Mellanox Connect-X 2 card to connect two computers for a 10 gigabit network connection. However, I recently moved one of the cards from an Asus X99 Deluxe with an i7 5960x to an MSI X670 Pro WiFi with an AMD Ryzen 7950x (the other card remained in an Intel NUC9i7QNX Ghost Canyon with an i7 9750H cpu) and, for some reason, I cannot get the full 10 gigabit performance no matter what configurations I use. I tried different PCIe slots on the board (the x2 and the x4) and there doesn't seem to be a difference. Changing the jumbo packet size to 9000 (from 1514) and disabling flow control made no difference either. I can't really figure out what's wrong. For example, here is some iperf output:
I'm using the driver located here:
https://network.nvidia.com/products/adapter-software/ethernet/windows/winof-2/
named (WinClient 1909 MLNX_VPI_WinOF-5_50_53000_All_Win2019_x64.exe) on Windows 10 21H2 (19044).
Here is some additional driver information:
I previously got 900-950 MB/sec both ways when the card was in the Asus motherboard with the old intel 5960x CPU.
Any idea what could be causing this poor performance? If this isn't resolvable, are there other 10 gigabit nics you recommend to try instead? I'm happy to buy a new one if I need to. I don't want to waste too much time figuring this out.
Code:
PS C:\Users\John> iperf3.exe -c 192.168.1.221 -p 577 -R
Connecting to host 192.168.1.221, port 577
Reverse mode, remote host 192.168.1.221 is sending
[ 4] local 192.168.1.210 port 53369 connected to 192.168.1.221 port 577
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.01 sec 229 MBytes 1.91 Gbits/sec
[ 4] 1.01-2.00 sec 304 MBytes 2.56 Gbits/sec
[ 4] 2.00-3.01 sec 162 MBytes 1.36 Gbits/sec
[ 4] 3.01-4.01 sec 150 MBytes 1.26 Gbits/sec
[ 4] 4.01-5.01 sec 102 MBytes 855 Mbits/sec
[ 4] 5.01-6.02 sec 165 MBytes 1.38 Gbits/sec
[ 4] 6.02-7.00 sec 169 MBytes 1.43 Gbits/sec
[ 4] 7.00-8.00 sec 202 MBytes 1.70 Gbits/sec
[ 4] 8.00-9.01 sec 178 MBytes 1.48 Gbits/sec
[ 4] 9.01-10.00 sec 226 MBytes 1.92 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.00 sec 1.84 GBytes 1.58 Gbits/sec sender
[ 4] 0.00-10.00 sec 1.84 GBytes 1.58 Gbits/sec receiver
iperf Done.
PS C:\Users\John> iperf3.exe -c 192.168.1.221 -p 577
Connecting to host 192.168.1.221, port 577
[ 4] local 192.168.1.210 port 53395 connected to 192.168.1.221 port 577
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-1.00 sec 601 MBytes 5.04 Gbits/sec
[ 4] 1.00-2.00 sec 637 MBytes 5.35 Gbits/sec
[ 4] 2.00-3.00 sec 616 MBytes 5.17 Gbits/sec
[ 4] 3.00-4.00 sec 672 MBytes 5.61 Gbits/sec
[ 4] 4.00-5.00 sec 597 MBytes 5.04 Gbits/sec
[ 4] 5.00-6.00 sec 671 MBytes 5.63 Gbits/sec
[ 4] 6.00-7.00 sec 644 MBytes 5.40 Gbits/sec
[ 4] 7.00-8.00 sec 639 MBytes 5.36 Gbits/sec
[ 4] 8.00-9.00 sec 630 MBytes 5.27 Gbits/sec
[ 4] 9.00-10.00 sec 636 MBytes 5.35 Gbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval Transfer Bandwidth
[ 4] 0.00-10.00 sec 6.20 GBytes 5.32 Gbits/sec sender
[ 4] 0.00-10.00 sec 6.19 GBytes 5.32 Gbits/sec receiverI'm using the driver located here:
https://network.nvidia.com/products/adapter-software/ethernet/windows/winof-2/
named (WinClient 1909 MLNX_VPI_WinOF-5_50_53000_All_Win2019_x64.exe) on Windows 10 21H2 (19044).
Here is some additional driver information:
I previously got 900-950 MB/sec both ways when the card was in the Asus motherboard with the old intel 5960x CPU.
Any idea what could be causing this poor performance? If this isn't resolvable, are there other 10 gigabit nics you recommend to try instead? I'm happy to buy a new one if I need to. I don't want to waste too much time figuring this out.
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