Thank you Ray dpdk is not running in the container - this is customer container and I cannot force the customer to use dpdk. Regarding the "not compatible" - I mean pkts received at vpp user-space, destined to C1 (container) , should be copied to the kernel and then to C1 IP-stack (e.g. AF_PACKET interface ) , while this copy can be saved if my vSwitch is running in kernel. So theoretically for the container networking use-case , vSwitch in kernel can achieve better performance and CPU utilization than any vSwitch over dpdk. (VPP or OvS) Unless a memory map can be used here to save the copy (userspace to kernel and kernel to userspace) Best Regards Avi
> -----Original Message----- > From: vpp-dev@lists.fd.io [mailto:vpp-dev@lists.fd.io] On Behalf Of Ray > Kinsella > Sent: Friday, 16 February, 2018 4:52 PM > To: vpp-dev@lists.fd.io > Subject: Re: [vpp-dev] VPP vs XDP-eBPF performance numbers - for linux > containers > > Hi Avi, > > So the "not compatible" comment is something I would like to understand a bit > more? > > Are you typically running DPDK/VPP based or Socket based applications inside > your containers? > > Our perspective is that userspace networking is also equally good for > Container/Cloud Native - of course depending on what you are trying to do. We > have done a huge amount of work in both VPP and DPDK developing > technologies to help like MemIF (including libmemif), Virtio-User, FastTap, > Master-VM, Contiv-VPP etc to help in this regard. > > What a container is - ultimately - is a silo'ing of CPU, memory and IO > resources > for both Kernel and Userspace processes, but there is nothing in this forces > us > to choose Kernel over Userspace networking. > > The way we typically handle Containers networking for both VPP/DPDK is for > packets to flow directly between userspace processes - no kernel required. > Where VPP runs in the default namespace possibly as a vSwitch or vRouter, and > switches packets to containers running DPDK/VPP etc, all achieved in > userspace. We also provide the Master-VM approach and/or FastTAP or > AF_PACKET to punt the packets into the Kernel when required. > > We test the the performance of aspects of this such as Memif regularly - > results are available here. > > https://docs.fd.io/csit/rls1710/report/vpp_performance_tests/packet_throughp > ut_graphs/container_memif.html#ndr-throughput > > Thanks, > > Ray K > > > On 13/02/2018 14:04, Avi Cohen (A) wrote: > > Hello > > Are there 'numbers' for performance - VPP vs XDP-eBPF for container > networking. > > > > Since the DPDK and linux-containers are not compatible, is a sense that > container and host share the same kernel - hence pkts received at VPP-DPDK > at user-space and directed to a linux container - should be go down to the > kernel and then to the container ip-stack, while in XDP-eBPF this pkt can be > forward to the container ip-stack directly from the kernel. > > > > I heard that a vhostuser interface for containers is 'in-working' stage. > > Can anyone assist with the performance numbers and the status of this vhost- > user for containers ? > > > > Best Regards > > Avi > > > > > > > > > > -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#8251): https://lists.fd.io/g/vpp-dev/message/8251 View All Messages In Topic (7): https://lists.fd.io/g/vpp-dev/topic/11144798 Mute This Topic: https://lists.fd.io/mt/11144798/21656 New Topic: https://lists.fd.io/g/vpp-dev/post Change Your Subscription: https://lists.fd.io/g/vpp-dev/editsub/21656 Group Home: https://lists.fd.io/g/vpp-dev Contact Group Owner: vpp-dev+ow...@lists.fd.io Terms of Service: https://lists.fd.io/static/tos Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub -=-=-=-=-=-=-=-=-=-=-=-
