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_throughput_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
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