UDP packet out-of-order transmission on i40e network card

[tanlinfeng]

Hello, my server CPU is an Intel(R) Xeon(R) Silver 4210R, and the network card uses i40e with the driver version upgraded to 2.28.10. I deployed FreeSWITCH on the server and tested 300 video streams (with outgoing bandwidth >500M). When capturing packets on the server, the transmitted RTP packets were out of order, causing severe stuttering in the video conferences. However, when I reduced the number of concurrent calls to under 50, the packet disorder disappeared. Later, I switched to another server with an onboard igb network card. Under the same test of 300 video conferences, the RTP packets sent by the server were not disordered.

OS:
Centos8.0
Centos8.2
kylin server V10 sp2