Hi, I have an application where I'm sending a very low rate (1pps) to certain ports just for gratuitous arp. I allocate a pktmbuf on a different core, send it through a ring to my tx core thread, and use rte_eth_tx_burst() to send that packet, and hopefully free. I've noticed that even though the packets are sent, the driver is never freeing the packets back to the mempool, which just throws errors when I try to allocate another one. I've tried playing with tx_conf.tx_free_thresh, but that didn't seem to have any effect. If I called rte_pktmbuf_free() right after sending, it appears to free just fine, although that's not a solution. Does anyone know what might cause this?
