Unable to handle transfer rates >2 GiB/s

[HanabishiRecca]

qBittorrent & operating system versions

qBittorrent: 4.6.5
OS: Arch Linux
Qt: 6.7.2
libtorrent: 2.0.10

What is the problem?

I'm actually able to acheive transfers rates more than 2 GiB/s and exceed the max int32 value. This leads to weird results.

Notice the Unknown column value.

And even weirder on a seeding side. Along with Unknown upload values, I'm actually able to achieve negative share ratio. 🙃

There is obvious int wrap around happening here.

The root of the issue actually lies in libtorrent (arvidn/libtorrent#7693).
But qBittorrent itself also has related code parts that should be tweaked. E.g.

qBittorrent/src/base/bittorrent/torrentimpl.cpp

Lines 1514 to 1524 in 610d5ef

	int TorrentImpl::uploadPayloadRate() const
	{
	// workaround: suppress the speed for Stopped state
	return isStopped() ? 0 : m_nativeStatus.upload_payload_rate;
	}
	int TorrentImpl::downloadPayloadRate() const
	{
	// workaround: suppress the speed for Stopped state
	return isStopped() ? 0 : m_nativeStatus.download_payload_rate;
	}

[xavier2k6]

May be related/relevant.

• All torrents seeding/downloading stop once global upload amount reaches ~1.986TB #13003
• Int32 being rounded up to a number that doesn't fit in Int32 #5851