DELL PowerEdge R750 with Intel X710 - Teaming - bad Performance

[Andreas_456]

Hello,

we have troubles with DELL PowerEdge R750 with Intel X710 cards. Windows Server 2022 - 2 Intel PCIe X710 NICs Switched Embedded Teaming enabled. We face the trouble that performance on big file transfer over smb and iperf Tool is about 100-120 MBit/s. When we disable the primary team member performance goes up to 1 Gbit/s. I´ve testet an older Intel X550 NIC in the same server and there is no performance problem in combination with NIC teaming. We had a support ticket on Dell and have checked the hardware and drivers. Windows driver Version is 1.19.165.0 - NVM Version is 9.50 (latest driver and FW version from dell published). DELL statement is, that there is no hardware issue because each single interface is working well. Are there any known issues in this case?

We are facing the problem since we changed the hardware model to DELL PowerEdge R750 with Intel X710 cards. On DELL PowerEdge R740 with X550 cards which were supportet in the past, we are not facing the problem. Also on Intel X722 cards there are no problems in teaming.

Kind regards,

Andreas

[pujeeth]

Hello Andreas_456,

Greetings!

Kindly provide us the below information:

1. Please let us know if the product came with the system or was purchased separately.
2. Kindly go through the article below and let us know the status:

Tuning Throughput Performance for Intel® Ethernet Adapters

https://www.intel.com/content/www/us/en/support/articles/000005811/ethernet-products.html

1. What tests have been performed to isolate this issue? If possible, please share the error screenshot with us.

Regards

Pujeeth

Intel customer support technician

[Andreas_456]

Hello Pujeeth,

thanks for your reply. In last week we isolated the issue in following manners:

One new findings came out last week: only Download direction to a server with Intel X710 NICs is affected. Upload stays the same with 2-3 Gbit/s with iperf Test. 

Environment: Windows 2022 DC, Dell PowerEdge R750 mit 2 separate PCIX Intel X710 Network Cards.
We create in our Datacenter Infrastructure a virtual switch (switched embedded teaming) on a hyper v host with following commands:

new-vmswitch -EnableEmbeddedTeaming $true -name "HostInfra" -NetAdapterName "Host_1","Host_2"

Test with iperf Tool:
.\iperf3.exe -c TestHost-1 (with X710 card) -w 2m -t 30s -i 1s
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-30.00  sec  8.78 GBytes  2.51 Gbits/sec                  sender
[  5]   0.00-30.00  sec  8.78 GBytes  2.51 Gbits/sec                  receiver

After adding one virtual Network Card performance for Download (Direction to the host) goes down:

From here the problem comes active:

add-VMNetworkAdapter -ManagementOS -Name SMB1 -SwitchName HostInfra

Before rebooting the server - from the server to another server performance is ok but after a reboot download speed direction to the server with the Intel x710 NICs is low - 80-90 MBit/s 

iperf Test in direction to the affected server with X710 card
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-30.00  sec   304 MBytes  84.9 Mbits/sec                  sender
[  5]   0.00-30.02  sec   302 MBytes  84.3 Mbits/sec                  receiver

2nd Test Environment: Windows 2022 DC, Dell PowerEdge R750 mit 2 separate Intel PCIx X550 or 2 PCIx Broadcom 10 Gbit Network Cards.
Performance is as expected with same network configuration:

iperf Test in direction to a server with 2 Broadcom cards (also tested on Intel X550 NICs which also is ok.)
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-30.00  sec  7.33 GBytes  2.10 Gbits/sec                  sender
[  5]   0.00-30.02  sec  7.33 GBytes  2.10 Gbits/sec                  receive

We do a ISO copy from our template machine to a Hyper V Host and found out, that this SMB Copy is about 20-30 MB/s upload to the server.



We also tuned the Network card parameters from your documentation which doesn´t took an speed advantage in this case.

Kind regards,
Andreas

[Andreas_456]

Hello Pujeeth,

last week we got a resolution for this issue. The VMQ settings and vrss settings for the Host Management Interface was setted wrong which is configured over the VMM and is pushed to our hosts. The machines which were deployed with Intel X550 cards and broadcom cards has automatically corrected VMQ to work without performance decreasement. The Intel X710 machines didn´t apply it in a way were ingoing traffic is getting low speed. So we corrected the VMQ setting on the VMM and it works now for us.

Cheers,

Andreas 

[IntelSupport]

Hello Andreas_456,

Thank you for sharing the details.

Kindly allow some time to review the information, and I will get back to you with an update shortly.

Regards,

Akshaya 

Intel Customer Support Technician

[IntelSupport]

Hello Andreas_456,

Could you kindly share the SSU logs for further analysis? 

To collect the logs, please refer to the link below :

Help Guide for the Intel® System Support Utility

Regards,

Akshaya 

Intel Customer Support Technician

[pujeeth]

Hello Andreas_456,

This is the first follow-up regarding the issue you reported to us.

Could you kindly share the SSU logs for further analysis? 

To collect the logs, please refer to the link below :

Help Guide for the Intel® System Support Utility

Feel free to reply to this email, and we'll be more than happy to assist you further.

Regards,

Pujeeth

Intel Customer Support Technician

[Sachinks]

Hello Andreas_456,

Greetings!

Thank you for the update. We are glad to know that it's resolved and thank you for sharing the resolution!

Kindly let us know if we can go ahead and close this case for now.

Regards,

Sachin KS

Intel Customer Support Technician

[Andreas_456]

Hello Sachin,

yes - this case can be closed.

Kind regards,

Andreas

[IntelSupport]

Hello Andreas_456,

Thank you for the confirmation. We will proceed to close the case.

Please feel free to reach out if you need any assistance in the future.

Regards,

Akshaya 

Intel Customer Support Technician