[Iccrg] RE: delay and gooput fairness

[Lachlan Andrew]

Greetigns César,

For delay, you could use Jain's index. (I think he proposed it in the
1989 paper "Analysis of the increase and decrease algorithms for
congestion avoidance in computer networks".  Could someone correct
me?)

Jain's index is fairly poor for goodput, but you can use Jain's index
on the reciprocal of the goodput.

An alternative is to use Kelly's utility maximization framework, and
measure the drop in utility due to the inequality of rates.

Cheers,
Lachlan

On 13/09/2007, César Cárdenas <ccardena at itesm.mx> wrote:
> Dear all,
> I realize I made a wrong question:
>
> Is there any measure of "delay fairness" or "goodput fairness" for a group
> of TCP flows served by a FQ algorithm?
> If yes, do you know a procedure to estimate them when you have 30 replications?
> Or do you have some suggestions?
>
> Many thanks in advance,
> César
>
> >-- Mensaje Original --
> >Date: Thu, 13 Sep 2007 18:41:22 +0200
> >From: César Cárdenas <ccardena at itesm.mx>
> >Subject: delay and gooput fairness
> >Reply-To: ccardena at itesm.mx
> >To: tmrg-interest at icsi.berkeley.edu
> >Cc: iccrg at cs.ucl.ac.uk
> >
> >
> >Dear all,
> >
> >It there any measure for "delay fairness" or "goodput fairness" of a TCP
> >flow?
> >
> >If yes, I would appreciate if you point me to a good reference,
> >
> >I apologize if these both lists are not adequate for this question.
> >
> >Please accept my best regards,
> >César
> >
> >
> >César Cárdenas-Pérez (ccardena at itesm.mx)
> >Monterrey Tech, Querétaro Campus, México
> >http://www.qro.itesm.mx
> >Personal Phone: +(33) 633306689
> >Office Phone: +(33) 145817146
> >Office Fax: +(33) 145813119
> >Skype pseudo: cesarcardenas7
> >All phones and fax from abroad France
> >
> >The content of this data transmission is not considered as an offer, proposal,
> >understanding, or agreement unless it is confirmed in a document signed
> by
> >a legal representative of ITESM. The content of this data transmission is
> >confidential and it is intended to be delivered only to the addresses, therefore,
> >it shall not be distributed and/or disclosed through any mean without the
> >original sender's previous authorization. If you are not the addressee you
> >are forbidden to use it, either totally or partially, for any purpose.
> >
> >
>
> César Cárdenas-Pérez (ccardena at itesm.mx)
> Monterrey Tech, Querétaro Campus, México
> http://www.qro.itesm.mx
> Personal Phone: +(33) 633306689
> Office Phone: +(33) 145817146
> Office Fax: +(33) 145813119
> Skype pseudo: cesarcardenas7
> All phones and fax from abroad France
>
> The content of this data transmission is not considered as an offer, proposal,
> understanding, or agreement unless it is confirmed in a document signed by
> a legal representative of ITESM. The content of this data transmission is
> confidential and it is intended to be delivered only to the addresses, therefore,
> it shall not be distributed and/or disclosed through any mean without the
> original sender's previous authorization. If you are not the addressee you
> are forbidden to use it, either totally or partially, for any purpose.
>
>
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-- 
Lachlan Andrew  Dept of Computer Science, Caltech
1200 E California Blvd, Mail Code 256-80, Pasadena CA 91125, USA
Phone: +1 (626) 395-8820    Fax: +1 (626) 568-3603