This method ensures that the seeder/initiator in super-seeding mode is not robbed of his entire upload bandwidth for a single torrent. The swarm (not including the initiator) has all required parts among them to complete the torrent, without having to connect to the original seeder/initiator.
The missing packets are then requested by means of contacting other leechers. It's goal is to ensure that any client is supplied with as few packets as possible to complete the torrent. This mode is used when a person has low upload bandwidth. Superseeding means that a torrent is initiated (i call him the initiator). It has nothing to do with super-seeding as i understand it. I'm not an expert (by a long shot) on how super seeding works but I think it causes "young" torrents to be slow when there are peers with extremely low upload caps Sorry for ranting! Sorry also if I'm misrepresenting how this stuff works. Which is why they've got at least 5% more of the file than the rest of us "cooperative" peers. Of course, my client is perfectly happy to send data to them (opportunistic unchoke). To give a bit more detail, what I noticed about these peers is that they unchoke my client, my client queues some requests, they never actually send any data, and then they choke me again. What are the peers with the super-low upload caps trying to do? Race to see who can get 100% of the file first in spite of the fact that they are holding up the whole torrent? Or are they just idiots who don't know what they are doing with their client settings? So the whole torrent just crawls until the peers with reasonable upload caps finally get 100% of the file. But by uploading almost nothing, they are holding up the release of more data from the seeds which I presume are in super-seeding mode (again, I'm no expert so someone please correct me if I'm wrong). They get ahead of the rest of the peers by taking advantage of their opportunistic unchokes. There will be two or three peers which have the highest percentage of the file (by about 5% or so) and they upload next to nothing. I see this phenomenon every week when I download a video blog immediately after it is released.
I'm not an expert (by a long shot) on how super seeding works but I think it causes "young" torrents to be slow when there are peers with extremely low upload caps. Does this happen even when there are lots of seeds? Or does it only happen when there aren't many seeds? You might be slowing down when you reach the point where only the few seeds have the remaining bits you need.
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