[p2p-hackers] p2p framework

Greg Bildson gbildson at limepeer.com
Tue Nov 29 18:16:00 UTC 2005


It scales and gives good coverage.  Its goal is to reach as little of the
network as required to produce reasonable results (150 to 250 + altlocs).
If a search can't retrieve this many results with a full TTL (TTL=3,
outdegree=30) broadcast then yes, the query will not exceed some maximum
broadcast.

Reaching the entire network != Scalability.

Scalability == network survival with increasing # of users.

As Serguei mentions, Gnutella has dynamic querying, TTL and flow control to
limit traffic (in about that order).

Thanks
-greg

> -----Original Message-----
> From: p2p-hackers-bounces at zgp.org [mailto:p2p-hackers-bounces at zgp.org]On
> Behalf Of Haris Papadakis
> Sent: Tuesday, November 29, 2005 12:13 PM
> To: Peer-to-peer development.
> Subject: Re: [p2p-hackers] p2p framework
>
>
> On Tue, 29 Nov 2005, Daniel Stutzbach wrote:
>
> > On Tue, Nov 29, 2005 at 11:33:55AM -0500, Greg Bildson wrote:
> > > > I came across Gnutella, which in its pure architecture suffers from
> > > > scalability problems due to flooding.
> > >
> > > Gnutella "flooding"?  That is so 2002.  Your phrase
> "iterative deepening"
> > > sounds more like the dynamic querying that we use now.
> >
> > I find it amusing when people claim a functioning 2-million peer
> > system doesn't scale. :-)
> >
> Well, actually, either does not scale or does not give good coveragae. Cos
> as I have said in another list, the basic reason Gnutella scales is TTL,
> no? Is it not tha case in Gnutella: Scalability, coverage, pick one?
> I must have an email somewhere from a developer in Limewire saying that it
> is NOT the purpose of Gnutella to reach all the network..
>
> Harris Papadakis
> ICS-FORTH
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