tap device speed

[David Marchand]

On Tue, Oct 3, 2023 at 6:01 PM Stephen Hemminger
<stephen at networkplumber.org> wrote:
>
> On Tue, 3 Oct 2023 10:49:16 +0200
> Antonio Di Bacco <a.dibacco.ks at gmail.com> wrote:
>
> > I understand, could we use another solution ? Like a memif  interface
> > in DPDK and libmemif in Linux?
>
> The issue is accessing kernel networking devices. Both virtio user
> and XDP are faster for that. Memif is for doing process to process networking.

For dpdk <-> kernel, as you are mentioning virtio-user/vhost, let me
add that there is some activity on this side, with VDUSE.

Maxime is working on the VDUSE kernel and dpdk bits.
He gave a talk about the current status during the summit and some
performance numbers:
https://dpdksummit2023.sched.com/event/1P9xA/vduse-performance-how-fast-is-it-maxime-coquelin-red-hat


-- 
David Marchand