Re: [p2pi] [tsv-area] TANA proposed charter
Nicholas Weaver <nweaver@ICSI.Berkeley.EDU> Tue, 21 October 2008 17:40 UTC
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From: Nicholas Weaver <nweaver@ICSI.Berkeley.EDU>
To: Stanislav Shalunov <shalunov@shlang.com>
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Cc: tana@ietf.org, Nicholas Weaver <nweaver@ICSI.Berkeley.EDU>, p2pi@ietf.org, TSV Area <tsv-area@ietf.org>, "Eddy, Wesley M. (GRC-RCN0)[VZ]" <Wesley.M.Eddy@nasa.gov>
Subject: Re: [p2pi] [tsv-area] TANA proposed charter
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On Oct 21, 2008, at 10:06 AM, Stanislav Shalunov wrote: >> Yet why would a bulk-data content provider want to USE it? > > This is a great question and it deserves a more detailed answer than > this, but let me try, briefly, to provide one reason to use it: > > Because the user wants to use the Internet while P2P app is doing > whatever it is doing. Or the user will uninstall the app. > > The content provider serves at the leisure of the user. The user is > willing to share uplink capacity as long as the sharing is largely > invisible. The user will be upset by uploads that affect the user's > ability to use the network for interactive applications and web > browsing. > > (There are other scenarios, particularly with shared congestion and > traffic management, that generally push the content provider to be > nicer, so the above is just one example.) However, the "Internet Not Working" effect is a subpiece of the overall problem: It is buffer occupancy on end-user buffers where the buffers are on the order of 1+ RTT (often 1+ Second!). Otherwise, the incentives are to be as UN-friendly as possible, as the externalities of congestion, EXCEPT at the access-link device, are applied to other users. Thus the P2P application provider can use existing RTT-based congestion control techniques to look for a greater than .25 RTT increase in delay, and respond to it by shrinking window sizes until the RTT drops and at-that-point, call it good. In fact, simply feed this into bandwidth estimation: Do an initial uncongested bandwidth estimation on startup (packet-pair measurement) to other peers (eliminates the "select a bandwidth" checkbox, bonus!), attempt to allocate to the whole pipe-5% with your TCP flows, and do an immediate backoff/slow ramp-back when you see RTTs increasing to MULTIPLE peers. Although a new class of congestion control that would do a true end-to- end job would be a better solution, the partial solution is complete from the P2P application provider's viewpoint: it fixes the "We break the net for everything else" effect on the user, while still keeping the very agressive (many-flow TCP) properties of P2P for the rest of the network. Or at least until you bribe the NAT box vendors to implement some active queue management. _______________________________________________ p2pi mailing list p2pi@ietf.org https://www.ietf.org/mailman/listinfo/p2pi
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Reinaldo Penno
- Re: [p2pi] [tsv-area] TANA proposed charter Nicholas Weaver
- Re: [p2pi] [tsv-area] TANA proposed charter Stanislav Shalunov
- [p2pi] TANA proposed charter Stanislav Shalunov
- Re: [p2pi] [tsv-area] TANA proposed charter Lars Eggert
- Re: [p2pi] [tsv-area] TANA proposed charter Bruce Davie
- Re: [p2pi] [tsv-area] TANA proposed charter Joe Touch
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Marshall Eubanks
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Joe Touch
- Re: [p2pi] [tsv-area] TANA proposed charter Stanislav Shalunov
- Re: [p2pi] [tsv-area] TANA proposed charter Salman Abdul Baset
- Re: [p2pi] [tsv-area] TANA proposed charter Stanislav Shalunov
- Re: [p2pi] [tsv-area] TANA proposed charter Nicholas Weaver
- Re: [p2pi] [tsv-area] TANA proposed charter Stanislav Shalunov
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Narayanan, Vidya
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Nicholas Weaver
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Lars Eggert
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Narayanan, Vidya
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Narayanan, Vidya
- Re: [p2pi] TANA proposed charter Reinaldo Penno
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Narayanan, Vidya
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Narayanan, Vidya
- Re: [p2pi] TANA proposed charter Marshall Eubanks
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Nicholas Weaver
- Re: [p2pi] [tsv-area] TANA proposed charter Eddy, Wesley M. (GRC-RCN0)[VZ]
- Re: [p2pi] [tsv-area] TANA proposed charter Murari Sridharan
- Re: [p2pi] [tsv-area] TANA proposed charter Ted Faber
- Re: [p2pi] [tsv-area] TANA proposed charter Ted Faber
- Re: [p2pi] [tsv-area] TANA proposed charter Caitlin Bestler
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Ted Faber
- Re: [p2pi] [tsv-area] TANA proposed charter Das, Saumitra
- Re: [p2pi] [tsv-area] [tana] TANA proposed charter Das, Saumitra
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Stanislav Shalunov
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Rolf Winter
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Laird Popkin
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Salvatore Loreto
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Reinaldo Penno
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Rolf Winter
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Reinaldo Penno
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Rolf Winter
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Kurt Tutschku
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter toby.moncaster
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Nicholas Weaver
- Re: [p2pi] [tsv-area] TANA proposed charter Ingemar Johansson S
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Michael Menth
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Michael Welzl
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Roland Bless
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Roland Bless
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Nicholas Weaver
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Marshall Eubanks
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Marshall Eubanks
- Re: [p2pi] [tana] TANA proposed charter Stanislav Shalunov
- Re: [p2pi] [tana] TANA proposed charter Laird Popkin
- Re: [p2pi] [tana] TANA proposed charter Enrico Marocco
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Rolf Winter
- Re: [p2pi] [tana] TANA proposed charter toby.moncaster
- Re: [p2pi] [tsv-area] TANA proposed charter toby.moncaster
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter toby.moncaster
- Re: [p2pi] [tsv-area] TANA proposed charter Mark Allman
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Bryan Ford
- Re: [p2pi] [tana] TANA proposed charter Gorry Fairhurst
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Narayanan, Vidya
- [p2pi] TANA proposed charter -- packet marking qu… John Leslie
- Re: [p2pi] TANA proposed charter -- packet markin… Nicholas Weaver
- Re: [p2pi] TANA proposed charter -- packet markin… John Leslie
- Re: [p2pi] TANA proposed charter -- packet markin… Nicholas Weaver
- Re: [p2pi] TANA proposed charter Livingood, Jason
- Re: [p2pi] TANA proposed charter -- packet markin… Laird Popkin
- Re: [p2pi] [tana] TANA proposed charter -- packet… Woundy, Richard
- Re: [p2pi] TANA proposed charter -- packet markin… Stanislav Shalunov
- Re: [p2pi] TANA proposed charter -- packet markin… Robb Topolski
- Re: [p2pi] TANA proposed charter -- packet markin… Nicholas Weaver
- Re: [p2pi] TANA proposed charter -- packet markin… Bruce Davie
- Re: [p2pi] [tana] [tsv-area] TANA proposed charter Robb Topolski