Hi Which version of dpdk you are using? I have some fixes for dequeue zero copy and now in 18.02-rc1, you can try 18.02-r1.
Cheers JJ > -----Original Message----- > From: dev [mailto:[email protected]] On Behalf Of Loftus, Ciara > Sent: Tuesday, January 23, 2018 6:46 PM > To: liyang07 <[email protected]> > Cc: [email protected]; [email protected] > Subject: Re: [dpdk-dev] About : Enable optional dequeue zero copy for vHost > User > > Hi, > > For the meantime this feature is proposed as ‘experimental’ for OVS DPDK. > Unless you are transmitting to a NIC, you don’t need to set the n_txq_desc. > My testing has been only with a DPDK driver in the guest. Have you tried that > option? > > Thanks, > Ciara > > From: liyang07 [mailto:[email protected]] > Sent: Wednesday, January 17, 2018 10:41 AM > To: Loftus, Ciara <[email protected]> > Cc: [email protected] > Subject: About : Enable optional dequeue zero copy for vHost User > > > Hi Ciara, > > I am tesing the function of "vHost dequeue zero copy" for vm2vm on a > host, and I have some problems: > > 1. The networking is OK before run iperf, I can ping successed from vm1 > to vm2，but after run iperf, the networking between vm1 and vm2 is down;(I > think n_txq_desc cause the problem) > > 2. I know the limitation about n_txq_desc, but I cannot set the > n_txq_desc for dpdkport while the vms on the same host, because there is > no dpdkports work fow my testing; > > > > Thus, how can I resolve it, thanks. > > > _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
