young Fedora torrents spread data too slowly

[Chuck Anderson]

On Sat, Oct 11, 2008 at 06:16:27PM -0700, John Reiser wrote:
> About 2230 UTC on Sat.Oct.11, the 67 leeches finished within a few minutes
> of each other.  The torrents started about 0000 UTC.  So it took more than 22 hours
> to distribute the 67 copies of 726MB of data.  That is approx. 10KB/s for each,
> on average, which is very slow.  The expected speed is at least 10 times as fast.
>
> One theory is deliberate throttling/choking somewhere.
> Here's a [current] traceroute for two of my machines that were in the swarm
> during those 22 hours [first few hops omitted due to paranoia]:

I'm pretty sure this was throttling done by torrent1.fedoraproject.org 
itself.  I was coming in via Internet2, and I assume the reverse route 
was also via Internet2 (which might be a bad assumption).

 4  WORCESTER-BOSTON.GODDARD.GIGAPOP.NET (130.215.6.2)  1.947 ms  2.015 ms  2.041 ms
 5  nox1sumgw1-Vl-591-NoX-WPI.nox.org (192.5.89.41)  2.111 ms  2.092 ms  2.470 ms
 6  nox300gw1-Vl-803-NoX.nox.org (192.5.89.238)  2.991 ms  2.642 ms  2.679 ms
 7  nox300gw1-PEER-NoX-INTERNET2-192-5-89-222.nox.org (192.5.89.222)  7.883 ms  7.856 ms  7.712 ms
 8  ge-2-3-1.0.rtr.atla.net.internet2.edu (64.57.28.19)  12.137 ms  11.702 ms  11.662 ms
 9  so-0-0-0.0.rtr.atla.net.internet2.edu (64.57.28.6)  25.262 ms  25.396 ms  25.401 ms
10  dep7600-gw2-internet2.ncren.net (198.86.17.65)  33.395 ms  33.404 ms  33.439 ms
11  rtp7600-gw-to-dep7600-gw2.ncren.net (128.109.70.137)  35.270 ms  35.507 ms  36.060 ms
12  rtp11-gw-to-rtp7600-gw-sec.ncren.net (128.109.70.121)  36.187 ms  36.056 ms  36.068 ms
13  ibiblio-gw-to-rtp11-gw.ncren.net (128.109.70.114)  36.363 ms  36.371 ms  36.509 ms
14  torrent1.fedoraproject.org (152.46.7.220)  35.207 ms !X  35.207 ms !X  35.268 ms !X