Sporadic packet loss in VMA application on CX5 but not on CX6

We have a high data rate multicast recieving application utiziling VMA where we will experience sporadic packet loss of ~1-50 packets, several times a day, occuring on all multicast flows at the same time. These packet losses are tracked with rx_discards_phy.

We see this packet loss when using the CX5 card (our majority are deployed using this) but not on the CX6 card.

What tuning or software changes would we be able to implement to get the CX5 to not drop these packets?

you have to adjust the buffer setting on the CX5 card to optimize packet handling.
Increase the size of buffer to receive can help to handle the incoming packet and reduce the packet loss.

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