DMA Throughput (Myricom) - CESNET/UltraGrid GitHub Wiki
Throughput of your DMA must be at least 1.3GBps (note that the output is in Bytes, not bits):
ethtool -S eth2 | fgrep dma
read_dma_bw_MBs: 1757
write_dma_bw_MBs: 1736
read_write_dma_bw_MBs: 3436