Hi, Zhihong. I can't reproduce this in my environment. Could you please provide ovs-vswithd.log with VLOG_DBG enabled for netdev-dpdk and outputs of following commands: # ovs-vsctl show # ovs-appctl dpctl/show # ovs-appctl dpif-netdev/pmd-rxq-show in 'good' and 'bad' states?
Also, are you sure that VM started with exactly 4 queues? Best regards, Ilya Maximets. On 03.03.2016 18:24, Wang, Zhihong wrote: > 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
