HI, I have 2 x Dell R730XD servers each with a 4117 Connect X card, all drivers installed 100%, yet when I run iperf test I cannot get mote than 10Gbps from test. Cables are also rated for 25Gbps. Any idea’s on what to check
Driver Version : 2.60.23957.0
Firmware Version : 14.27.6122
Port Number : 1
Bus Type : PCI-E 8.0 GT/s x8
Link Speed : 25.0 Gbps/Full Duplex
Part Number : 0MRT0D
Serial Number : IL0MRT0D74031998003P
Device Id : 4117
Revision Id : 0
Current MAC Address : B8-59-9F-D1-11-DA
Permanent MAC Address : B8-59-9F-D1-11-DA
Network Status : Connected
Adapter Friendly Name : SLOT 6 Port 1
Port Type : ETH
IPv4 Address #1 : 192.168.1.108
IPv6 Address #1 : fe80::5ca0:c53f:17e6:dcb2%5
aviap
June 30, 2021, 9:51am
2
I would suggest that you implement the following steps:
install first the latest Mellanox WInMFT tool in the Win2019 server (https://mellanox.com/products/adapter-software/firmware-tools )
Run “mlxlink” tool PowerShell command to confirm that the actual link of your adapter vs. Dell switch is indeed 25 Gb/s
For example
# mlxlink.bat -d mt4117_pciconf0 -c
+++++++++++++++++++++++++++++++++++
Operational Info
State : Active
Physical state : LinkUp
Speed : 25GbE
+++++++++++++++++++++++++++++++++++
if 25Gb/s is confirmed, then check with Dell folks if the switch Link-type is properly configured
use the WinOF-2 v2.60 User-Manual to perform driver/fw/pci “performance fine tuning” on the Win2019 win server
(https://docs.mellanox.com/display/winof2v26051000/Introduction )
Use NTttcp test-tool rather then iperf tool
Iperf tool is more like oriented for Linux whilst NTttcp test-tool is Windows oriented