On 06/17/2010 07:45 PM, David Barrett wrote:
> But due to the social pressure of the BitTorrent community, the defaults
> are set to be pro-community rather than pro-user. And so few individual
> users care to trick out their clients that it results in a community
> that has an unnecessarily high seeder count -- even though there is no
> meaningful enforcement mechanism. **
[...]
> ** I'm referring to the public trackers, not private trackers. Maybe
> the private trackers are better -- maybe they have high seeder ratios
> even further down the long tail. I've never used them I don't know.
> But my point is on the public trackers, popular content has a higher
> seeder ratio than one would expect if we assume users are generally biz
> zealots.
You will find the paper by Meulpolder et al. [1] interesting. They
measure private and public tracker communities to arrive at the
conclusion that the seeder/leecher ration in private communities
are at least as 10 times higher than in public communities and
(no surprise) peer longer in private communities (> 43% of peers
seeding longer than 1 day.)
This study did not measure the same torrents being distributed
over public and private trackers, so your mileage in interpreting
the results in that context will vary.
[1] Public and private BitTorrent communities: A measurement study. M.
Meulpolder, L. D'Acunto, M. Capota, M. Wojciechowski, J.A. Pouwelse,
D.H.J. Epema, H.J. Sips. Proceedings of Usenix IPTPS, 2010.
Thanks,
- 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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