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Re: [RFC 5/8] Track the "total rq utilisation" too

From Peter Zijlstra <peterz@infradead.org>
Newsgroups linux.kernel
Subject Re: [RFC 5/8] Track the "total rq utilisation" too
Date 2016-01-15 09:40 +0100
Message-ID <qR85l-3wp-27@gated-at.bofh.it> (permalink)
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On Fri, Jan 15, 2016 at 07:50:49AM +0100, Luca Abeni wrote:
> On Thu, 14 Jan 2016 20:48:37 +0100
> Peter Zijlstra <peterz@infradead.org> wrote:
> 
> > On Thu, Jan 14, 2016 at 04:24:50PM +0100, Luca Abeni wrote:
> > > This is the sum of the utilisations of tasks that are assigned to
> > > a runqueue, independently from their state (TASK_RUNNING or blocked)
> > 
> > Is it actually used?
> Not in this patchset...
> It is a possible "cheap" (but less accurate) alternative to the
> tracking introduced in patch 4. Or can be used in more advanced
> implementations of multi-processor GRUB, but not in this patchset.
> 
> So, it can be removed from the patchset; I added it so that people can
> see all the possible alternative utilization tracking strategies.

OK, so that might've been useful text for the changelog. But given that,
maybe leave it out for now.

BTW, have you got a paper on smp grub?

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Thread

[RFC 5/8] Track the "total rq utilisation" too Luca Abeni <luca.abeni@unitn.it> - 2016-01-14 16:30 +0100
  Re: [RFC 5/8] Track the "total rq utilisation" too Peter Zijlstra <peterz@infradead.org> - 2016-01-14 20:20 +0100
    Re: [RFC 5/8] Track the "total rq utilisation" too Luca Abeni <luca.abeni@unitn.it> - 2016-01-15 09:10 +0100
  Re: [RFC 5/8] Track the "total rq utilisation" too Peter Zijlstra <peterz@infradead.org> - 2016-01-14 20:50 +0100
    Re: [RFC 5/8] Track the "total rq utilisation" too Luca Abeni <luca.abeni@unitn.it> - 2016-01-15 08:00 +0100
      Re: [RFC 5/8] Track the "total rq utilisation" too Peter Zijlstra <peterz@infradead.org> - 2016-01-15 09:40 +0100
        Re: [RFC 5/8] Track the "total rq utilisation" too Luca Abeni <luca.abeni@unitn.it> - 2016-01-15 10:20 +0100

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