<as individual>

Hi Fred,

thank you for writing this down; one aspect that gets referred to, but not made 
completely explicit in sections 3.2 and 3.3 is the interaction of the AQM / 
Queue signals with the transport control loop.

IMHO, it should be made very clear, when the AQM action is done before the 
queueing, that the AQM signal is delayed for the outer control loop; obviously 
in a defensive loss situation, this will always be the case. In comparison, 
when the Queue prepends the AQM action, the AQM signal is delayed less to the 
outer control loop.

Depending on the depth of the queue / departure rate, that timing difference 
can be significant...

I don't know how to put that into better words that would fit into your draft 
though.

Best regards,


Richard Scheffenegger





> -----Original Message-----
> From: aqm [mailto:[email protected]] On Behalf Of Fred Baker (fred)
> Sent: Freitag, 20. Juni 2014 17:52
> To: grenville armitage
> Cc: [email protected]
> Subject: Re: [aqm] New Version Notification for draft-baker-aqm-sfq-
> implementation-00.txt
> 
> 
> On Jun 19, 2014, at 8:12 PM, grenville armitage <[email protected]>
> wrote:
> 
> > Fred,
> >
> > Just read it -- clear, easy to comprehend. I'd be happy pointing AQM
> newcomers at it.
> >
> > One nit: Might be just me, but the Acknowledgements section feels more
> like an editorial/opinion. For a newcomer to AQM it wouldn't necessarily
> be clear how the body of the I-D supports the expressed opinion.
> 
> Fair enough. The second sentence likely belongs in the conclusions.
> 
> > cheers,
> > gja
> >
> > On 06/14/2014 08:07, Fred Baker (fred) wrote:
> >> I'd be interested in comments on this.
> >>
> >>> From: <[email protected]>
> >>> Subject: New Version Notification for
> >>> draft-baker-aqm-sfq-implementation-00.txt
> >>> Date: June 13, 2014 at 2:52:07 PM PDT
> >>> To: Fred Baker <[email protected]>, Rong Pan <[email protected]>, Fred
> >>> Baker <[email protected]>, Rong Pan <[email protected]>
> >>>
> >>>
> >>> A new version of I-D, draft-baker-aqm-sfq-implementation-00.txt
> >>> has been successfully submitted by Fred Baker and posted to the IETF
> >>> repository.
> >>>
> >>> Name:             draft-baker-aqm-sfq-implementation
> >>> Revision: 00
> >>> Title:            On Queuing, Marking, and Dropping
> >>> Document date:    2014-06-13
> >>> Group:            Individual Submission
> >>> Pages:            14
> >>> URL:            http://www.ietf.org/internet-drafts/draft-baker-aqm-
> sfq-implementation-00.txt
> >>> Status:         https://datatracker.ietf.org/doc/draft-baker-aqm-sfq-
> implementation/
> >>> Htmlized:       http://tools.ietf.org/html/draft-baker-aqm-sfq-
> implementation-00
> >>>
> >>>
> >>> Abstract:
> >>>   This note discusses implementation strategies for coupled queuing
> and
> >>>   mark/drop algorithms.
> >>>
> >>>
> >>>
> >>>
> >>> Please note that it may take a couple of minutes from the time of
> >>> submission until the htmlized version and diff are available at
> tools.ietf.org.
> >>>
> >>> The IETF Secretariat
> >>>
> >>
> >>
> >>
> >> _______________________________________________
> >> aqm mailing list
> >> [email protected]
> >> https://www.ietf.org/mailman/listinfo/aqm
> >>
> >
> > --
> > Professor Grenville Armitage
> > Director, Centre for Advanced Internet Architectures School of
> > Software and Electrical Engineering Faculty of Science, Engineering
> > and Technology Swinburne University of Technology, Australia
> > http://caia.swin.edu.au
> >
> > _______________________________________________
> > aqm mailing list
> > [email protected]
> > https://www.ietf.org/mailman/listinfo/aqm

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