Re: [E-impact] Reducing Energy Consumption While Maintaing QoS

Hesham ElBakoury <helbakoury@gmail.com> Tue, 24 January 2023 17:07 UTC

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From: Hesham ElBakoury <helbakoury@gmail.com>
Date: Tue, 24 Jan 2023 09:06:59 -0800
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To: Alvaro Retana <aretana.ietf@gmail.com>
Cc: Michael Welzl <michawe@ifi.uio.no>, e-impact@ietf.org
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Subject: Re: [E-impact] Reducing Energy Consumption While Maintaing QoS
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Thanks Alvaro!
I coauthored a related paper that was published last year in the GreenNet
workshop. This "*paper provides a holistic view of green TE using evolving
SDN and SR-specific features without adding much additional computational
tasks, and also considers SR segment processing overhead for energy
efficiency*."

Unfortunately we did not perform empirical analysis to provide PoC for the
algorithms in the paper.

The paper is available here:
https://ieeexplore.ieee.org/abstract/document/9844091

Hesham


On Tue, Jan 24, 2023, 7:55 AM Alvaro Retana <aretana.ietf@gmail.com> wrote:

> On January 21, 2023 at 4:11:41 AM, Michael Welzl wrote:
>
>
> ...
> > > minimizing power consumption while maintaining QoS are in conflict.
> > > Therefore, any solution will involve some kind of compromise between
> the
> > > two.
> >
> >
> > … that’s just not true. That was the whole point of my ICCRG
> presentation at
> > the last IETF:
> >
> https://folk.universitetetioslo.no/michawe/research/publications/2022-mw-iccrg.pdf
> ...
> >
> > ... Now, the main point really isn’t just the FCT - it’s that, we have:
> > 1) win-win cases,
> > 2) cases where we can reduce power without a performance gain, but also
> > without a performance loss,
> > 3) trade-offs.
> >
> > I agree that case 3) is what might seem most intuitive, but this is also
> the
> > one that makes it the hardest to convince people to do anything. I would
> like
> > more awareness, and R&D focus on, cases 1 and 2.
>
>
> Yes -- I agree that more focus on the win-win/neutral cases is needed.
>
> However, trade-offs should be kept in mind to understand the potential
> impact and to avoid falling into them with new ideas.  I think this is
> more important as we look at larger, more complex systems.
>
> For example, we wrote a draft that considers the interaction between
> network performance and efforts at energy aware control planes.  The
> intent is for it to be a guide for those working enhancements or new
> proposals.
>
>    https://datatracker.ietf.org/doc/html/draft-retana-rtgwg-eacp
>
>
> Alvaro.
>