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qbittorrent / qBittorrent

qBittorrent BitTorrent client
https://www.qbittorrent.org
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Settings - BitTorrent- add limit by number of seeds #11830

Open Furnicarium opened 4 years ago

Furnicarium commented 4 years ago

4.2.1 no problems, just a wish. I like to seed only rare torrents where I am the only seeder.

Seeker2 commented 4 years ago

A seeding torrent does not know how many others are also seeding the same torrent, as seeds do not connect to each other...except rarely, and then only very briefly.

Trackers, PEX, LSD/LPD, and DHT miscount seeds -- often considerably over-estimating the number of seeds still running the torrent. A peer that finishes the torrent and stops it immediately is often reported as an available seed to new peers for hours to days after it left.

Furnicarium commented 4 years ago

Ok, I understand. thank you.

a-raccoon commented 4 years ago

@Seeker2 I don't think any of that necessarily invalidates the request, though. For instance, a checkbox "[x] Always seed at-risk torrents with N or fewer seeds." could work in tandem with the other seed_until ratio or time settings. Having this checkbox selected would prevent the torrent from being paused and dropping out of the seed queue. The estimate would be pulled from the tracker, and the default N threshold could be set to 2 or 3.

Another option I'd suggest adding is "[x] Prioritize seeding at-risk and unhealthy torrents." In addition to the above, this would put effort into seeding torrents that have a particularly high "leech" to "seed" ratio, and especially torrents that register 3 or more peers all stuck at the same % complete, as you may be their only hope of ever completing that torrent.

I do all this by hand currently, and it takes a lot of manual maintenance I wish were automated.

Seeker2 commented 4 years ago

Yes, it doesn't invalidate the request...such a feature would only be partially successful due to the problem I mentioned with counting active seeds and peers.

Another problem currently is qBitTorrent's torrent queuing system is buggy almost to the point of unusable when trying to keep only a few torrents active with 100+ torrents queued.