Hi all I run vpp in kvm vm,and the software nic is vhost-user. I test the vpp route performance with Tester, vm connect Tester with dpdk ovs datapath I exec the cli "show error" it show <Tx packet drop (dpdk tx faiulre)> item has so many packet.
I know vpp forward packets via vector,which is a set of packet.In my experience,If vpp have no cpu to forward packets, it will lose packet in dpdk rx, not tx. If lose packet in tx, I think the reason is tx corresponding to the card in ovs dpdk datapath not timely get the packet away. But in my test environment ,dpdk ovs datapath get packet rate is 10mpps,vpp forward rate is 800kpps. So I confuse about the dpdk tx drop so many packets. May be some config about vpp I mistake ? Hope to you reply :-) Thx
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