what does rx_no_dma_resources means in 'ethtool -S'

[LZiFe]

Hi,

I'm using 82599 10Gb NIC, and i see rx_no_dma_resources

increment in 'ethtool -S'. what does rx_no_dma_resources means? What's the difference between fifo and rx_no_dma_resources? How can i fix it?

Thanks in advance,

Lee

[Crisselle_Intel]

Hello Lee,

Thank you for posting in Intel Ethernet Communities. 

Kindly provide the following information for us to check on your query.

1.) Exact Linux driver version and the link where you downloaded the driver.

2.) Please share more details regarding the issue you encountered. Do you encounter packet loss issue?

Looking forward to your reply.

Best regards,

Crisselle C

Intel Customer Support

A Contingent Worker at Intel

[LZiFe]

Hi,

Thanks for your reply. I am using Ubuntu 16.04 LTS, Linux version 4.9.144, and nic driver download from 'https://downloadcenter.intel.com/en/download/14687/Ethernet--PCIe-10-Linux-?product=32609'

Intel NIC with ixgbe driver info as follows

the eth1 eeprom see the attachment.

we only use veth for docker(no bridge/no SR-IOV), and sometimes there are some tcp retransmissions.

[LZiFe]

I did some research

But I don't quite understand what would cause 'No free descriptor'. Is the Drop_En option in SRRCTL helpful?How can i change it?

Looking forward to your reply

[Crisselle_Intel]

Hello Lee,

Thank you for the response and the additional information provided.

Please let us further investigate on this query. Rest assured that we will get back to you within 1-3 business days.

Hoping for your patience.

Best regards,

Crisselle C

Intel Customer Support

A Contingent Worker at Intel

[Crisselle_Intel]

Hello Lee,

Thank you for the patience on this matter.

You may check out the existing thread in the sourceforge Intel page link below. Should you need further clarifications, you may submit a request ticket.

https://sourceforge.net/p/e1000/mailman/message/31419811/

Let us know if you have additional questions on this matter.

We look forward to your reply.

Best regards,

Crisselle C

Intel Customer Support

A Contingent Worker at Intel

[Crisselle_Intel]

Hello Lee,

Good day!

We'd like to check if you have additional questions regarding this request. If none, please be informed that this case will be automatically closed after 1 business day. Should you need further assistance, you may reply to this post to reopen this request or post a new question on this forum.

Thank you for choosing Intel products!

Best regards,

Crisselle C

Intel Customer Support

A Contingent Worker at Intel