Bug#1034550: r8168-dkms: Excessive network latency with PREEMPT_RT kernel without the R8168-dkms driver

[Rod Webster <rod@vmn.com.au>]

Thanks for a prompt response. We used the alpha 2 ISO release. I had checked sources.list. The two of us working on this were unaware that there was a difference between non-free-firmware and non-free. non-free-firmware is not mentioned as a component on the debian wiki https://wiki.debian.org/SourcesList  But the examples for bookworm show the use of non-free-firmware so it's no wonder we were confused. Could the documentation team amend the wiki to clarify the changes and the differences between non-free and non-free-firmware components? I'm sure this will be a source of confusion moving forward.

In any case, this is a side issue and we await a response from the kernel team in relation to the latency issue with the R8169 module under PREEMPT_RT.

On Tue, 18 Apr 2023 at 18:13, Andreas Beckmann <anbe@debian.org> wrote:

Control: tag -1 - newcomer
Control: retitle -1 excessive network latency with PREEMPT_RT kernel without the r8168-dkms driver
Control: reassign -1 src:linux

On 18/04/2023 04.12, Rod Webster wrote:
> Package: r8168-dkms

> We are linuxcnc users which is packaged in Bookworm. Linuxcnc requires the
> PREEMPT_RT real time kernel as a prerequisite. We have found excessive latency
> in the real time environment since Debian moved to the 5.x kernels.  We note
...

I'm reassigning this bug to the linux kernel package, as this is not an
issue in the r8168 driver.

> We are no longer able to locate the R8168-dkms driver in the repositories,
> despite it being listed as available in package search. We have downloaded a
> .deb file from the Sid packages to install the correct driver.

>   3. The R8168-dkms driver to continue to be made available in the Bookworm
> repositories.

The r8168-dkms package is in non-free - do you have that enabled?


Andreas