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qbittorrent / qBittorrent

qBittorrent BitTorrent client
https://www.qbittorrent.org
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Magnet link stop broadcast after 5-10% #21325

Open filchef opened 1 month ago

filchef commented 1 month ago

qBittorrent & operating system versions

qBittorrent/4.6.6 x64 Windows 10 Home 22H2 x 64 Qt: 6.4.3 Libtorrent: 1.2.19.0

What is the problem?

Upload from new magnet link after 5-10% fast upload stuck and is very slow

Steps to reproduce

Create new torrent and magnet link Post new magnet link to the forum and via email start seed transfer stop or very slow 5-10%

Additional context

No response

Log(s) & preferences file(s)

No response

luzpaz commented 1 month ago

Does this happen with every magnet link ?

HanabishiRecca commented 1 month ago

Transfer speeds do not depend on torrent sharing method in any way. The client is not even aware of where the peer is came from. I'm pretty sure you will get the same results by sharing the torrent file.

filchef commented 1 month ago

Does this happen with every magnet link ?

I check with 2 magnet links

filchef commented 1 month ago

Transfer speeds do not depend on torrent sharing method in any way. The client is not even aware of where the peer is came from. I'm pretty sure you will get the same results by sharing the torrent file.

After posting magnet links I post torrent file to forum and email and speed of upload was good - magnet link upload and download was stuck 5-10% Magnet link use P2P connection and torrent file use tracker connection. Sorry for my bad English I am from Bulgaria

HanabishiRecca commented 1 month ago

Magnet link use P2P connection and torrent file use tracker connection.

No, transfers are always P2P, it's the essential thing of the bittorrent protocol. And magnet links could also contain trackers.

The only difference between magnets and torrent files is that with magnets you need to also acquire metadata from peers. But after that, during transfer, there is no difference.

In fact qBittorent even generates a torrent file automatically from received metadata. You could find it in the BT_backup directory, .torrent file named with the torrent hash.

filchef commented 1 month ago

No, transfers are always P2P, it's the essential thing of the bittorrent protocol. The only difference between magnets and torrent files is that with magnets you need to also acquire metadata from peers. But after that, during transfer, there is no difference.

I don't know why this happen.

HanabishiRecca commented 1 month ago

I would bet on pure randomness of the results. Leading to confirmation bias. Especially if you are behind ISP's NAT or with closed ports, P2P transfers become very luck-based.

filchef commented 1 month ago

I told you that before the update to the latest version of qBittorrent the magnetic link worked fine, but now it's stuck, now the torrent client only works fine when uploading via torrent trackers It has nothing to do with confirmation bias

HanabishiRecca commented 1 month ago

Your statement has nothing to do with the described problem.

I think your problem is not with transfers speeds, but with peer discovery. In that case, having trackers of course help discover more peers. Although, it doesn't matter if it's a magnet link or a torrent file. As I already said, magnet links can contain trackers too.

Do you have DHT working? Its status is on the bottom panel, like DHT: N nodes.

filchef commented 1 month ago

Your statement has nothing to do with the described problem.

I think your problem is not with transfers speeds, but with peer discovery. In that case, having trackers of course help discover more peers. Although, it doesn't matter if it's a magnet link or a torrent file. As I already said, magnet links can contain trackers too.

Do you have DHT working? Its status is on the bottom panel, like DHT: N nodes.

Of course DHT works. I told you - the problem is very strange - in the beginning starts fast Upload but after 5-10% of the file download practically stops - I tried it several times with the computer in the next room. I should note that the file being transferred is 50GB When I upload it to a torrent tracker there is no such problem.

HanabishiRecca commented 1 month ago

I told you - the problem is very strange - in the beginning starts fast Upload but after 5-10% of the file download practically stops - I tried it several times with the computer in the next room.

So you tried it on a local network? Are you sure downloading side is fine? Did you monitor disk activity there? Does it have file preallocation enabled?

filchef commented 1 month ago

Not through the local network but through the internet and both computers are connected to the internet one with cable connection and second with wifi - two different internet providers . I also emailed a magnetlink to a friend of mine and the result is the same.