hello. I installed dpdp-2.1.0 on my ubuntu 14.04 server where two NIC ports are available. There are two KNI interfaces, vEth0 and vEth1, for two NIC ports. (i.e. one KNI for one NIC port) And I connected two servers, M1 and M3, to each NIC port as below.
[ M1 ]--------eth0-[ M2 ]-eth1--------[ M3 ] (vEth0) (vEth1) After running KNI example in dpdk-2.1.0 source tree, I pinged from M1 to M2(eth0) and from M3 to M2(eth1). It shows short latency over M1-M2, but large latency (1 second) over M2-M3. If I put "-i 0.2" option to ping, the large latency reduces to 200ms. If I put "-i 0.x", then the latency becomes 0.x secnod. I can't figure out what's wrong with my configuration and running parameters. Any comments are appreciated. my runtime environment as follows. # loading kni driver insmod igb_uio.ko insmod rte_kni,ko lo_mode=lo_mode_ring_skb # execute kni example (i.e. packet burst size is the default, 32) a.out -c 0x1414 -n 4 -- -p 0x3 -P --config="(0,2,4,6),(1,10,12,14)" -- Moon-Sang Lee, SW Engineer Email: sang0627 at gmail.com Wisdom begins in wonder. *Socrates*