DPDK ports sending or receiving packets, the jitter of transmission time is too large, > 5ms

[众合]

i am sorry for writing the question with chinese. 请教一个问题：我们系统在运行中会出现表决报文超时，调试检查发现可能是DPDK发送报文抖动问题，也有可能是DPDK接收报文抖动问题；在我们的系统中，我们希望平台上层发一个报文，DPDK马上向网络中发送这个报文，同样，网络中过来一个报文，希望DPDK马上提交这个报文给上层应用，也就是希望DPDK在底层发送和接收是没有多包缓存、延时等待这些机制的。在DPDK的应用软件中，我们已把发送报文的rte_eth_tx_burst函数的突发已设置为1，就是上层来一个报文就马上交给DPDK发送；对接收报文rte_eth_rx_burst函数的轮询已经足够快，从加的打印信息来看，基本上就网络中来一个报文就收一个报文上来了。所以，我们判断问题可能出在DPDK框架的驱动底层，在底层那里有多个报文缓存、等待这些机制存在。若判断正确，请问该如何设置？

[Simon-Intel]

Hi 众合,

Thank you for reaching out to the Intel support. We acknowledge receipt of your concern. To effectively troubleshoot the issue you're facing, we require some additional information from your end.

Could you kindly provide the following details?
1. System/board Model:
2. Complete ethernet card details:
3. Was the ethernet card purchased with the system?:

Your prompt response with this information will greatly assist us in diagnosing and resolving the issue as quickly as possible.

We look forward to hearing from you soon.

Best Regards,
Simon
Intel Customer Support Technician

[Simon-Intel]

Hi 众合,

Good Day!

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

I wanted to inquire whether you had the opportunity to provide the details requested in my previous message.

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

Regards,

Simon

Intel Customer Support Technician

[Poojitha]

Hi 众合,

Greetings for the day!

We are following up to check if you were able to find the information we requested. Kindly confirm at your earliest convenience, so that we can continue assisting you in resolving this matter.

We appreciate your understanding!

Regards,

Poojitha

Intel Customer Support Technician

[Simon-Intel]

Hi 众合,

Greetings for the day!

We would like to inform you that we are closing this request as no response has been received from our previous follow-ups. 

Please don't hesitate to ask any further questions in the future. Feel free to start a new conversation, as this thread will no longer be monitored.

Regards,

Simon

Intel Customer Support Technician