> From: Stephen Hemminger [mailto:step...@networkplumber.org]
> Sent: Tuesday, 12 November 2024 06.21
>
> On Wed, 6 Nov 2024 08:46:55 +0100
> Maxime Coquelin wrote:
> >
> > Why not just use Virtio-user PMD with Vhost-kernel backend [0]?
> > Are there any missing features that io_uring can address
On Wed, 6 Nov 2024 08:46:55 +0100
Maxime Coquelin wrote:
> Hi Stephen,
>
> On 10/30/24 22:56, Stephen Hemminger wrote:
> > The current tap device is slow both due to architectural choices and the
> > overhead of Linux system calls. I am exploring a how to fix that but some
> > of the choices req
> From: Maxime Coquelin [mailto:maxime.coque...@redhat.com]
> Sent: Wednesday, 6 November 2024 08.47
>
> Hi Stephen,
>
> On 10/30/24 22:56, Stephen Hemminger wrote:
> > The current tap device is slow both due to architectural choices and
> the
> > overhead of Linux system calls. I am exploring a
On Wed, 6 Nov 2024 03:52:51 +0300
Igor Gutorov wrote:
> On Wed, Nov 6, 2024 at 2:54 AM Morten Brørup
> wrote:
> >
> > > From: Stephen Hemminger [mailto:step...@networkplumber.org]
> > > Sent: Wednesday, 6 November 2024 00.26
> > >
> > > On Wed, 6 Nov 2024 00:22:19 +0100
> > > Morten Brørup w
> > > > > > Probably the hardest part of using io_uring is figuring out how
> > to
> > > > > > collect
> > > > > > completions. The simplest way would be to handle all
> > completions rx
> > > > and
> > > > > > tx
> > > > > > in the rx_burst function.
> > > > >
> > > > > Please don't mix RX and T
Hi Stephen,
On 10/30/24 22:56, Stephen Hemminger wrote:
The current tap device is slow both due to architectural choices and the
overhead of Linux system calls. I am exploring a how to fix that but some
of the choices require some tradeoffs. Which leads to some open questions:
1. DPDK tap also
On Wed, Nov 6, 2024 at 2:54 AM Morten Brørup wrote:
>
> > From: Stephen Hemminger [mailto:step...@networkplumber.org]
> > Sent: Wednesday, 6 November 2024 00.26
> >
> > On Wed, 6 Nov 2024 00:22:19 +0100
> > Morten Brørup wrote:
> >
> > > From what I understand, the TAP io_uring PMD only supports
[Public]
Snipped
>
>
> The current tap device is slow both due to architectural choices and the
> overhead of
> Linux system calls. I am exploring a how to fix that but some of the choices
> require
> some tradeoffs. Which leads to some open questions:
>
> 1. DPDK tap also support tunnel (TUN) m
> From: Stephen Hemminger [mailto:step...@networkplumber.org]
> Sent: Wednesday, 6 November 2024 00.26
>
> On Wed, 6 Nov 2024 00:22:19 +0100
> Morten Brørup wrote:
>
> > From what I understand, the TAP io_uring PMD only supports one RX
> queue per port and one TX queue per port (i.e. per TAP int
> From: Stephen Hemminger [mailto:step...@networkplumber.org]
> Sent: Tuesday, 5 November 2024 19.59
>
> On Sat, 2 Nov 2024 23:28:49 +0100
> Morten Brørup wrote:
>
> > > > >
> > > > > Probably the hardest part of using io_uring is figuring out how
> to
> > > > > collect
> > > > > completions. Th
On Sat, 2 Nov 2024 23:28:49 +0100
Morten Brørup wrote:
> > > >
> > > > Probably the hardest part of using io_uring is figuring out how to
> > > > collect
> > > > completions. The simplest way would be to handle all completions rx
> > and
> > > > tx
> > > > in the rx_burst function.
> > >
>
> From: Stephen Hemminger [mailto:step...@networkplumber.org]
> Sent: Friday, 1 November 2024 01.35
>
> On Thu, 31 Oct 2024 11:27:25 +0100
> Morten Brørup wrote:
>
> > > From: Stephen Hemminger [mailto:step...@networkplumber.org]
> > > Sent: Wednesday, 30 October 2024 22.57
> > >
> > > The curre
On Thu, 31 Oct 2024 11:27:25 +0100
Morten Brørup wrote:
> > From: Stephen Hemminger [mailto:step...@networkplumber.org]
> > Sent: Wednesday, 30 October 2024 22.57
> >
> > The current tap device is slow both due to architectural choices and
> > the
> > overhead of Linux system calls.
>
> Yes;
> From: Stephen Hemminger [mailto:step...@networkplumber.org]
> Sent: Wednesday, 30 October 2024 22.57
>
> The current tap device is slow both due to architectural choices and
> the
> overhead of Linux system calls.
Yes; but isn't it only being used for (low volume) management traffic?
Is the TAP
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