E810-XXVDA4 Dual 10G Receive Throughput Limitation During Simultaneous Recording

[Abdul123]

Hi Intel Team,

I am using the Intel Ethernet Network Adapter E810-XXVDA4 NIC card with 4x10G Ethernet ports.

Current behavior:

• When I receive and record a single 10G channel, I achieve around 1200 MB/s, which is expected and close to line rate.
• However, when I simultaneously use two 10G channels for receiving and recording, the total throughput reaches only around 1600 MB/s.

Expected behavior:

• Since I am using dual 10G links simultaneously, I expect combined throughput close to 2400–2500 MB/s total.

Environment:

• CentOS 9 Linux
• High-speed Ethernet data receiving and recording
• NVMe SSD storage
• Multi-threaded application

Please suggest:

• Whether this limitation could be related to PCIe bandwidth, NUMA configuration, CPU bottleneck, RSS/queue configuration, memory bandwidth, or driver limitations.
• Recommended driver settings and performance tuning for achieving full dual-port 10G receive throughput.
• Best practices for queue/core mapping and RSS configuration with the E810-XXVDA4.

Thanks.

[vish1]

Hello Abdul123,

Greetings!!

To address the output speed concerns with your Intel Ethernet Network Adapter, please follow the troubleshooting steps below:

1. Update the adapter firmware to the latest available version.
2. Update the Linux drivers to the most recent release.
3. Refer to the “Optimizing Performance” section (page 41) in the Intel Ethernet Adapters User Guide and apply the recommended settings. (https://www.intel.com/content/www/us/en/download/19373/adapter-user-guide-for-intel-ethernet-adapters.html?wapkw=adapter%20user%20guide)
4. Follow the guidelines outlined in the Linux performance tuning document to further optimize performance.

For your reference, we have also shared a document that provides detailed information on advanced settings and Receive Side Scaling (RSS) for Intel® Network Adapters. These configurations can help improve performance consistency and throughput.

https://www.intel.com/content/www/us/en/support/articles/000005593/ethernet-products.html

https://www.intel.com/content/www/us/en/support/articles/000006703/ethernet-products.html

Kindly review the attached documents and let us know if you need any further assistance.

Best Regards,

Vishal Shet P

Intel Customer Support Technician

[vish1]

Hello Abdul123,

Greetings!!

We are following up on your case and wanted to check if you had a chance to review our previous email.

Please let us know if you need any further clarification or assistance. We look forward to your update.

Best Regards,

Vishal Shet P

Intel Customer Support Technician