Hi, Julian I'm curious on how to calculate the DHT node number. What DHT algorithm is used? The routing hop count is O(log N)? Are these 57,142.857 nodes super user nodes? If the DHT overlay is formed by servers, how many servers are required?
By the way, I have a draft about P2P CDN using PPSP and RELOAD. In the proposed P2P CDN, trackers (servers) form a DHT overlay. http://www.ietf.org/internet-drafts/draft-li-ppsp-p2p-cdn-00.txt BR Lichun jc <[email protected]> 发件人: [email protected] 2010-03-16 07:27 收件人 Bruce Lowekamp <[email protected]> 抄送 "[email protected]" <[email protected]> 主题 Re: [P2PSIP] Is P2PSIP RELOAD not suitable to be leverage for both P2P Live Streaming and VoD Service? You need 57,142.857 nodes to route 20M of peer traffic. This is the algorithm we used in fasttrack and is the same as in skype. This is a maximum capacity scenario. Sent from my iPhone On Mar 15, 2010, at 6:32 PM, Bruce Lowekamp <[email protected]> wrote: They scale fine, but there is a point beyond which adding additional peers to the overlay routing merely adds latency. Don't have time to look up the references now, but there are a number of papers discussing the advantages of different numbers of peers (superpeers in a lot of systems) needed for overlay routing. You don't need 10M. Bruce On Mon, Mar 15, 2010 at 11:55 AM, jc <[email protected]> wrote: On Mar 15, 2010, at 3:32 PM, Bruce Lowekamp wrote: The performance comparison draft compares the performance of a centralized lookup server with a P2P DHT system with 10M peers. Since those address entirely different use cases, and no one would ever deploy a 10M peer distributed tracker, it's not clear what the point of the comparison is. This has nothing to do with RELOAD. There are active distributed trackers w/ > 1M peers. Why would you not deploy a 10M user distributed tracker? They do inherently scale infinitely by nature. Bruce On Mon, Mar 15, 2010 at 12:55 AM, World <[email protected]> wrote: Dear all, I am thinking what P2P Live Streaming and VoD Service can leverage P2PSIP RELOAD. According to some research or proposal report, it seems that P2PSIP RELOAD can be used in P2P-based Tracker and/or chunk description distribution (chunk discovery) at the full distributed deployment. Both P2P-based Tracker and chunk description distribution over P2PSIP overlay were evaluated in performance referred to draft-chen-ppsp-dht-chunk-discovery-evaluation-00.txt and draft-hu-ppsp-tracker-dht-performance-comparison-01.txt. The result showed the performance of DHT-based Tracker and chunk description distribution is worse, even not acceptable for P2P Live Streaming and VoD Service. So can we make such conclusion that P2PSIP RELOAD is not suitable to be leverage for both P2P Live Streaming and VoD Service in case a full distributed deployment is not mandatory? What do you think? Any comments are welcome. Thanks. BR, Jeffrey _______________________________________________ P2PSIP mailing list [email protected] https://www.ietf.org/mailman/listinfo/p2psip _______________________________________________ P2PSIP mailing list [email protected] https://www.ietf.org/mailman/listinfo/p2psip _______________________________________________ P2PSIP mailing list [email protected] https://www.ietf.org/mailman/listinfo/p2psip -------------------------------------------------------- ZTE Information Security Notice: The information contained in this mail is solely property of the sender's organization. This mail communication is confidential. Recipients named above are obligated to maintain secrecy and are not permitted to disclose the contents of this communication to others. This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the originator of the message. Any views expressed in this message are those of the individual sender. This message has been scanned for viruses and Spam by ZTE Anti-Spam system.
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