On 29. 10. 24 15:37, Morten Brørup wrote:
From: Lukas Sismis [mailto:sis...@cesnet.cz]
Sent: Tuesday, 29 October 2024 13.49
Intel PMDs are capped by default to only 4096 RX/TX descriptors.
This can be limiting for applications requiring a bigger buffer
capabilities. The cap prevented the applications to configure
more descriptors. By bufferring more packets with RX/TX
descriptors, the applications can better handle the processing
peaks.
Signed-off-by: Lukas Sismis <sis...@cesnet.cz>
---
Seems like a good idea.
Have the max number of descriptors been checked with the datasheets for all the
affected NIC chips?
I was hoping to get some feedback on this from the Intel folks.
But it seems like I can change it only for ixgbe (82599) to 32k
(possibly to 64k - 8), others - ice (E810) and i40e (X710) are capped at
8k - 32.
I neither have any experience with other drivers nor I have them
available to test so I will let it be in the follow-up version of this
patch.
Lukas
