Re: [RFC 8/8] Do not reclaim the whole CPU bandwidth

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From	Luca Abeni <luca.abeni@unitn.it>
Newsgroups	linux.kernel
Subject	Re: [RFC 8/8] Do not reclaim the whole CPU bandwidth
Date	Fri, 15 Jan 2016 10:50:02 +0100
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On Fri, 15 Jan 2016 09:50:04 +0100
Peter Zijlstra <peterz@infradead.org> wrote:
[...]
> The trouble is with interfaces. Once we expose them we're stuck with
> them. And from that POV I think an explicit SCHED_OTHER server (or a
> minimum budget for a slack time scheme) makes more sense.
> 
> It provides this same information while also providing more benefit,
> no?
From an interface point of view, I agree.

> > >That would maybe fit in nicely with the DL based FIFO/RR servers
> > >from this other pending project.
> > Yes, this reminds me about the half-finished patch for RT
> > throttling using SCHED_DEADLINE... But that patch needs much more
> > work IMHO.
> 
> IIRC two years ago at RTLWS there was a presentation that the SMP
> issues were 'solved' and they would be posting the patches 'soon'. 
Do you mean this paper?
http://retis.sssup.it/~nino/publication/rtlws14bdm.pdf

I started from that patch, and I have something that "basically works",
but I am still discussing some theoretical and implementation issues
with the paper's authors.



				Luca

Thread

[RFC 8/8] Do not reclaim the whole CPU bandwidth Luca Abeni <luca.abeni@unitn.it> - 2016-01-14 16:40 +0100
  Re: [RFC 8/8] Do not reclaim the whole CPU bandwidth Peter Zijlstra <peterz@infradead.org> - 2016-01-14 21:00 +0100
    Re: [RFC 8/8] Do not reclaim the whole CPU bandwidth Luca Abeni <luca.abeni@unitn.it> - 2016-01-15 09:30 +0100
      Re: [RFC 8/8] Do not reclaim the whole CPU bandwidth Peter Zijlstra <peterz@infradead.org> - 2016-01-15 10:00 +0100
        Re: [RFC 8/8] Do not reclaim the whole CPU bandwidth Luca Abeni <luca.abeni@unitn.it> - 2016-01-15 10:50 +0100
        Re: [RFC 8/8] Do not reclaim the whole CPU bandwidth luca abeni <luca.abeni@unitn.it> - 2016-01-26 14:00 +0100
          Re: [RFC 8/8] Do not reclaim the whole CPU bandwidth Peter Zijlstra <peterz@infradead.org> - 2016-01-27 15:50 +0100

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