On Mon, Oct 9, 2017 at 12:13 AM, Tan, Jianfeng <jianfeng....@intel.com> wrote:
> Hi, > > On 10/8/2017 12:54 PM, Bill Bonaparte wrote: > > Thanks Jianfeng for taking time to reply. > > please allow me to briefly explain why I want to run dpdk on xen. > our system is based on dpdk, which means we use dpdk as packet > receive/transmit engine, > and with integrated dpdk virtio/vmxnet3 driver, our system can run on > KVM/VMware platform . > this year, we have plan to run our system on AWS cloud, but I found that > AWS > uses xen as its virtualization platform, and the bus-info of nic is vif-x > (x could be 0,1,2...), > the driver used in kernel is vif. this should be para-virtualized nic used > on xen. > > > My guess is exactly as you describe. In AWS, we lack of a PMD for xen > netfront (vif) nic. And even we got such a PMD, we still need a PMD for xen > netback. Both are missing. > > > I don't know which dpdk drvier can manage this pv nic. then I see > xenvirt, I think this driver can > did this job, like virtio can manage virtio nic which is used on kvm. > unfortunately, after some study work, I run testpmd successfully on xen, > but no packets received. > > with the informain got from you, I know It's need to run vhost_xen at dom0 > so that xenvirt at domU can work. > but for my case, I have no change to run vhost_xen at dom0, because I only > can operate my own domU. > > for this case, If I want to run system which is based on dpdk at domU, > what should I do? > appreciate any idea or suggestion from you. > > > What kind of performance are you seeking? Only accelerating the frontend >> by a new PMD, i.e. netfront, we can bypass the VM kernel (). But without >> accelerating the backend, it only brings limited improvement. > > for me, the most important thing at the moment, is to run our system on xen guest (aka DomU), with the full functions. the performance could be a secondary consideration. most of time, for our guests, full functions, with the acceptable performance, is fine. do we have plan to support xen netfront pmd in dpdk ? in my humble opinion, limited performance is better than "not work" . > > Not sure if anyone from Amazon or Oracle can comment? > > Thanks, > Jianfeng >
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