Why doesn't igb driver set the wthresh it wants as default? I see: PMD: eth_igb_tx_queue_setup(): To improve 1G driver performance, consider setting the TX WTHRESH value to 4, 8, or 16.
But the default tx_conf has wthresh of 0. #define IGB_DEFAULT_TX_WTHRESH 0 Either message should be removed or default TX wthresh should change.