Hi, I ran an OVS multiqueue test with very simple traffic topology, basically 2 ports each with 4 queues, 8 rxqs in total, like below:
Pktgen <=4q=> PHY <=4q=> OVS <=4q=> testpmd in the guest First set pmd-cpu-mask to 8 cores, and everything works fine, each rxq got a core, and all txqids are valid. Then I set pmd-cpu-mask to 6 cores, and then 2 txqids become invalid in __netdev_dpdk_vhost_send(): qid = vhost_dev->tx_q[qid % vhost_dev->real_n_txq].map; qid returns -1 and this leads to discard of packets. Consequently in testpmd in VM we see only 2 queues are working and throughput drops more than a half. It works again when I set pmd-cpu-mask to 4 cores. My OVS and DPDK code are pulled from the repo on March 1st, 2016. Let me know if you need more info to reproduce this issue. Thanks Zhihong _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
