My program is a dns server implemented with run-to-completion model, when I start it with 11 cores, it has a normal performance(12M qps), but after 5-10 minutes, the qps decreased to 7M, I used Intel vTune Amplifier to analysis the process and found the top 2 hotspots is *ixgbe_recv_pkts_vec* and *rte_eth_rx_burst. * my test environments is:
CPU: E5-2650(two sockets) memory: 64GB OS: ubuntu 16.04 64bits Any advices on how to solve this strange problem? thx
