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Re: No 6.5.10-4 realtime kernel?

From Tixy <tixy@yxit.co.uk>
Newsgroups linux.debian.user
Subject Re: No 6.5.10-4 realtime kernel?
Date 2023-11-14 13:10 +0100
Message-ID <HA0oV-5o04-3@gated-at.bofh.it> (permalink)
References <HA0oV-5o04-5@gated-at.bofh.it> <Hzkg1-4UHx-23@gated-at.bofh.it> <Hzkg3-4UHx-69@gated-at.bofh.it> <HzLgd-5eaI-7@gated-at.bofh.it>
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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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Thread

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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