Hi, I'm writing an application using DPDK that transmits a large number of packets (it doesn't receive any). When I transmit at 2 Gb/sec, everything will run fine for several seconds (receiver is receiving at correct rate), but then the NIC appears to get 'stuck' and doesn't transmit any more packets. In this state, rte_eth_tx_burst() is returning zero (suggesting that there are no available transmit descriptors), but even if I sleep() for a second and try again, rte_eth_tx_burst() still returns 0. It almost appears as if a packet gets stuck in the transmit ring and keeps everything from flowing. I'm using an Intel 82599EB NIC.
Does anyone have any ideas of what might be going on? Thanks, Scott
