Arnaud Legout wrote:
> [Should we limit the cross posting? I believe sending this thread to
> 4 mailing lists is too much (may be this is because I am subscribed
> to all four)]
[... I took p2pi off; I suspect that a lot of this discussion is
pertinent to p2p-hackers. Unless I hear from that list's moderator
otherwise we can continue to include them (many from p2p-hackers
may not be subscribed to the IETF lists.) ...]
First off, thanks for reading the draft.
Next ...
> here is some feeback based on what we did in [Le Blond].
>
> section 3 We show that we can achieve much higher savings than 80% of
> reduction. [...]
OK; noted.
> section 4 we explain the relation between peers download completion
> time and network congestion. [...]
Similarly noted; thanks.
> section 8.1 you write that we did simulations. We did not, we did
> experiments with real BitTorrent clients.
OK, we will correct that.
> section 8.2 it is not clear what you mean in "as shown in [Le Blond],
> the right balance of randomness and locality depends on the P2P
> algorithm". We did not explore several P2P protocols, but only
> BitTorrent. We show that BT is extremely robust to high locality (as
> long as there is enough randomness within each ISP). We cannot
> conclude for any other P2P protocol.
Sure; we will correct and restrict the offending text accordingly.
> "On the other hand, P2P systems not adopting the tit-for-tat approach
> (e.g. the eDonkey network) should not be damaged by locality-based"
> It is not clear to me. Peer selection (tit-for-tat like choking algo
> in BT) is not the only one factor of efficiency, there is also piece
> diversity. Edonkey/emule also use rarest first (but a less efficient
> peer selection algorithm). Therefore, as locality adversely impact
> piece diversity, my bet is that Edonkey/emule will suffer from
> locality.
OK; we had clearly not considered piece diversity here.
Thanks, Arnaud.
- vijay
--
Vijay K. Gurbani, Bell Laboratories, Alcatel-Lucent
1960 Lucent Lane, Rm. 9C-533, Naperville, Illinois 60566 (USA)
Email: v...@{alcatel-lucent.com,bell-labs.com,acm.org}
Web: http://ect.bell-labs.com/who/vkg/
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