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Re: No 6.5.10-4 realtime kernel?

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Thanks for the LWN reference. I think I missed that article. I plan to
install the newest kernel in Trixie, then run the rtcqs script (
https://codeberg.org/rtcqs/rtcqs) to see how it looks for audio processing.
Based on that, I may still try to install a fully preemptible kernel from
source.

Scott Denlinger


On Tue, Nov 14, 2023 at 7:00 AM Tixy <tixy@yxit.co.uk> wrote:

> On Mon, 2023-11-13 at 20:45 +0100, Gilles Mocellin wrote:
> > > On Sun, Nov 12, 2023 at 10:04 AM Scott Denlinger
> > > <scottdenlinger94@gmail.com>
> > > wrote:
> > > > Does anyone know why there are no stock realtime kernels in
> trixie/sid? I
> > > > currently have 'linux-image-6.5.0-1-rt-amd64-unsigned' installed,
> but I
> > > > don't see any newer RT kernels available.
> > > >
> > > > Scott Denlinger
> >
> > Hello, I also was looking for it, but I've seen that the standard kernel
> seems
> > to have some preemptive patch (dynamic ?) :
> >
> > So I think the kernel packagers think it's sufficient ?
>
> Quoting a recent article from LWN [1]
>
>    PREEMPT_DYNAMIC, was added to the 5.12 kernel by Michal Hocko in
>    2021. It allows the preemption choice to be deferred until boot
>    time, where any of the modes except PREEMPT_RT can be selected by
>    the preempt= command-line parameter. PREEMPT_DYNAMIC allows
>    distributors to ship a single kernel while letting users pick the
>    preemption mode that works best for their workload.
>
> So if you specificity need a real-time kernel this won't give it to
> you.
>
> [1] https://lwn.net/Articles/944686/
>
> --
> Tixy
>
>

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No 6.5.10-4 realtime kernel? Scott Denlinger <scottdenlinger94@gmail.com> - 2023-11-12 16:10 +0100
  Re: No 6.5.10-4 realtime kernel? Scott Denlinger <scottdenlinger94@gmail.com> - 2023-11-12 16:10 +0100
    Re: No 6.5.10-4 realtime kernel? Gilles Mocellin <gilles.mocellin@nuagelibre.org> - 2023-11-13 21:00 +0100
      Re: No 6.5.10-4 realtime kernel? Scott Denlinger <scottdenlinger94@gmail.com> - 2023-11-14 12:50 +0100
      Re: No 6.5.10-4 realtime kernel? Tixy <tixy@yxit.co.uk> - 2023-11-14 13:10 +0100
        Re: No 6.5.10-4 realtime kernel? Scott Denlinger <scottdenlinger94@gmail.com> - 2023-11-14 16:20 +0100
          Re: No 6.5.10-4 realtime kernel? Gilles Mocellin <gilles.mocellin@nuagelibre.org> - 2023-11-14 23:20 +0100

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