Subject: Re: [p2prg] New version of p2prg-mythbustering

From: Arnaud Legout <[email-masked]>
Date: Thu, 17 Dec 2009 17:09:39 +0100

Hi,

I would suggest to add the following paragraphs in the next version of 
the document.
Tell me if you believe it makes sense.

section 3.1 (Reduced cross-domain traffic)

4. Le Blond et al. [LeBlond] show using simulations based on the real AS 
distribution of 6M
    of BitTorrent peers representing 214k torrents spread among 9k ASes 
that the maximum inter-AS
    traffic reduction is 56%. This maximum traffic reduction is achieved 
by assuming that only copy
    of each content cross each inter-AS links. It is not possible to 
achieve a higher traffic reduction,
    and such a reduction will be at the cost of a significant performance
    penalty for peers. However, they show that a reduction of 40% in 
inter-AS links is still achievable without
    any significant performance penalty.

section 4.1 (Increased Application Performance)

6. Le Blond et al. [LeBlond] show using controlled experiments that the 
measured application performance
    is a function of the degree of congestion on links the locality 
policy tries to reduce the traffic on.

Regards,
Arnaud.

Enrico Marocco a écrit :
> Folks,
>
> we have just submitted draft-marocco-p2prg-mythbustering-01; main
> changes include a new section about caching and some text about possible
> impacts on peering. This latter point in particular, i.e. possible
> impacts on peering and transit economics, is probably the area where
> more investigation is needed; any thoughts/comments are as usual very
> welcome.
>
> The draft is available at
> http://tools.ietf.org/html/draft-marocco-p2prg-mythbustering-01
>
>   
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-- 
Arnaud Legout, Ph.D.

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