Hi， Thanks for your reading. I encounter two problems when I use l2fwd and l3fwd. Here are the problems： P1. In l2fwd source code，I change these values，and it do not receive packets after receiving about 1K packets. #define NB_MBUF 81920 #define RTE_TEST_RX_DESC_DEFAULT 4032 Is it relevant with the i40e driver code below? " rxq->rx_tail = (uint16_t)(rxq->rx_tail & (rxq->nb_rx_desc - 1));" P2. I use l3fwd to process about 35Gps IP packet and packet length is 64B,the process drop many packets. Then I use 4 rx_queues and 4 lcores, but it's performance improves a little. The same result happens when I use 6 queues and 6 lcores. So how to location where the problem is. Is there any suggestions? My environment： OS：Redhat 6.5 X86_64 CPU：Intel Xeon E5-2650 v3@2.3GHz NIC：Intel Corporation Device [8086:1580] DPDK: 16.11 Thanks & Best Regards.&+ W(&&uM]״^=a+ W(z+ufW%y&h( ^r9^xټ(DL]4`@+ǫ]Iu&v^m6@I4^qy򙨥h( ^rR13u