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
>>
>>
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>> [email protected]
>> https://www.ietf.org/mailman/listinfo/p2psip
>>
>>
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