Thanks Stephen again for your help.

I will check out what you mentioned about CPU features.

By the way, regarding my earlier question about using DPDK memif in a Docker container.

I made a patch in the memif driver of DPDK so it uses a TCP socket instead of a UNIX domain socket.

This made it possible to communicate between a Docker container and an application outside the container using DPDK memif.

This patch only works without the "zero-copy" option for DPDK memif.

But the throughput of DPDK memif without zero-copy is rather good anyway.

Regards

Staffan

Den tis 22 feb. 2022 kl 02:49 skrev Stephen Hemminger <stephen@networkplumber.org>:

On Mon, 21 Feb 2022 21:28:08 +0100
Staffan Wiklund <staffan491@gmail.com> wrote:

> Stephen, thanks for your answer.
> I realize the statement is very vague.
> I was thinking of if there was something common in the design of Intel and
> AMD CPUs respectively that has an impact on their use by DPDK applications.
> Do you know if there is such a common design difference between Intel and
> AMD CPUs or is it just a matter of using an Intel or AMD CPU with the
> requested performance?
>
> Regards
> Staffan

I am not a CPU expert. But compare memory bandwidth, clock rate, PCI Express version
and support for AVX support (for some features). There a few places in DPDK
that can use AVX512 but it is limited
https://doc.dpdk.org/guides/howto/avx512.html

Also there is a tradeoff with more cores, NUMA, etc as well as cost.

Don't believe simple tribal knowledge, you need to look under the covers.