qBitTorrent eating all my bandwidth

[Xandal]

Hey there, I love pretty much everything about qBitTorrent except the fact that whenever it's downloading it eats up literally all of my download bandwidth.  Running a speedtest whilst torrenting yields 0.1kb/s down from 50-60Mb/s when not downloading.  When I was on 2.2.1 I could torrent and still keep around 30-40Mb/s and similar with Deluge (which I had to leave because of its awful UI and poor re-checking ability when combined with some of its plugins).  I'm really not sure why it's doing this, any troubleshooting I can do to help determine the problem?

[Nemo]

Hi and welcome,

Did you set a limit manually yourself within qBittorrent for Download and/or Upload?

[ciaobaby]

any troubleshooting I can do to help determine the problem?

https://github.com/qbittorrent/qBittorr ... ed'-issues

[Xandal]

http://www.speedtest.net/my-result/4437839026

http://i.imgur.com/Y00G4bY.png

http://imgur.com/jtg0I8O

Those are my settings and speedtest result.  In terms of a user, I probably seed more than I download.  I'm a part of like 10 different private trackers so I'm always seeding.  I'm also always running quite a bit of tasks (not currently because I just did a fresh install and haven't imported all of my torrents).  I'm also on the newest version of qBitTorrent.  Literally downloaded it yesterday.  And no, I didn't manually limit my download.  I limited my upload based on an optimization calculator.

[ciaobaby]

You have your upload/download limits the wrong way around, so you are NOT limiting anything, and your 'upload' limit is set at a little over 1.5 times your actual capacity.

[Xandal]

http://infinite-source.de/az/az-calc.html

That's the calculator I used to determine my settings.  It recommended 580 for my global max upload.  Unless I'm reading it wrong.  Either way, I never had to limit my download on any other client and never experienced the same level of bandwidth consumption.  What should I change the settings to, and would you mind leaving a small explanation as to why so I know for the future?  Thank you

[ciaobaby]

Unless I'm reading it wrong.  Either way

Probably not, ... ... Just getting it the wrong way around. 580 KiB/s would be fine for the download limit.

[Xandal]

Except that's an unrealistic download limit.  That's exceptionally slow and isn't utilizing my connection well at all.  Would never bother limiting myself to that when my downloads frequently come in at 6-7 MiB/s.  That's a pretty big difference when my average download is almost 10 GB.  uTorrent 2.2.1 and Deluge both managed to allow downloads at that speed, but also didn't destroy my connection.  Could speedtest with those running and get a consistent 30~ MB/s on download.  I speedtest with qBitTorrent limited at ~1000 KiB/s and get both high ping and a spotty download that ranges from 10-40 MB/s.  Is there something fundamentally different about how qBitTorrent allocates resoures, do I have a setting wrong, or are other clients just better at managing bandwidth?

[ciaobaby]

Except that's an unrealistic download limit.

Maybe, but it's bloody ridiculous for a upload limit unless your house is connected via a fractional T1 line.  I'm not TELLING you to use that value. You can recalculate or guess the values for your client to whatever you want, but at least get them the right way around in the options this time.

[Xandal]

I just straight up disabled the upload limit.  What I'm asking is what is a realistic way to acquire the same download speeds without qBitTorrent eating up every bit of my bandwidth?  Like I said, no other client gave me these issues.  You're ignoring all of the questions I actually asked and arguing about one setting.

[ciaobaby]

Tell me what bit of "You have the numbers the wrong way around" are you not seeing and I'll explain it in minute detail and be very, very patronising.


You have the suitable STARTING values for your connection, finding the ideal for YOUR particular usage is up to YOU to determine. NOBODY can tell you the exact limits to use, you have to find it out for yourself by trying different settings for:

max rate limit up;
max rate limit down;
global max connections;
per torrent connections;
max upload slots;
per torrent upload slots;
UTP on or off;
queueing numbers;

And noting the results.

[Switeck]

[quote="Xandal"]http://www.speedtest.net/my-result/4437839026

http://i.imgur.com/Y00G4bY.png

http://imgur.com/jtg0I8O

Those are my settings and speedtest result.[/quote]...Those values are "correct" according to Azureus Calculator found at:
http://infinite-source.de/az/az-calc.html
A cable line with supposedly ~56.8 megabits/second and ~5.7 megabits/second upload would use ~5700 kilobits/second as its upload speed.

But multiple assumptions are made by that which may not apply.
This assumes the cable line is STABLE at this upload speed! Was the test done during peak evening hours? (When cable likely has reduced total bandwidth, due to peak demand!)
It assumes the connection is dedicated to running torrents -- that means horrible speed test results WHILE running torrents.
The settings are for downloading at >10x max upload speed extremely busy torrents with 100's of low-quality seeds and peers on each -- that's why the number of connections per torrent (at 323) is way beyond 50. (50 is the "historical" normal/default value for multiple BitTorrent clients for multiple reasons, but even 50 can be too much!)
Even with the limit of 4 active torrents max, global max connections (at 1075) could be exceeded if all 4 torrents had 300+ connections each.

If you're trying to seed, it's overkill to connect to over 300 peers per torrent but only upload to 8 of them. Most will get nothing from you, and keeping them all connected at once greatly increases bandwidth used.
[quote="ciaobaby"]Maybe, but it's bloody ridiculous for a upload limit unless your house is connected via a fractional T1 line.[/quote]
A T-1 line is much slower than the line in question.
https://en.wikipedia.org/wiki/T-carrier
"T-1's maximum data transmission rate is 1.544 megabits per second."
That corresponds to about 180 KiloBYTES/second symmetric download and upload, although if you tried to do both at once on a T-1 line you'll likely fail at both tasks due to TCP-IP SYN-ACK overheads aggravated by bufferbloat.

[ciaobaby]

A T-1 line is much slower than the line in question.

Only 'on paper' and if you make no allowance for the fact of DSL lines being shared by possibly up to 50 users (the contention ratio). T1 or fractional T1 lines  are synchronous and dedicated to a single user.

In practice, a paired ISDN line (128kbps)  can regularly provide more stable rates than DSL does.

[Switeck]

http://rescomp.stanford.edu/~cheshire/r ... tency.html
"The conclusion here is obvious. If you're given the choice between a low bandwidth private connection, or a small share of a larger bandwidth connection, take the small share."

[Xandal]

[quote="ciaobaby"]
Tell me what bit of "You have the numbers the wrong way around" are you not seeing and I'll explain it in minute detail and be very, very patronising.


You have the suitable STARTING values for your connection, finding the ideal for YOUR particular usage is up to YOU to determine. NOBODY can tell you the exact limits to use, you have to find it out for yourself by trying different settings for:

max rate limit up;
max rate limit down;
global max connections;
per torrent connections;
max upload slots;
per torrent upload slots;
UTP on or off;
queueing numbers;

And noting the results.

[/quote]

You're the one who hasn't read the fact that I more than understand "they're the wrong way around".  I've fiddled with the values, but at no number can I acquire a download speed of 6-7 Mbps AND retain a reasonable bandwidth.  The main question you missed is below.

"Are other clients just better at managing bandwidth?" Like I said, I don't even HAVE to removed with the settings on Deluge/uTorrent 2.2.1.  I can leave no limit on my download or upload, but they'll hit a max download speed between 6-7 Mbps AND my connection won't drop below 30-40 Mbps during a speed test.  Is qBitTorrent just worse at managing bandwidth?  Is there a setting elsewhere, unrelated to the limiters that I might have off?  I'm more than capable of figuring out how to removed with limiters.  I scaled from 600 - 20,000 as my download limit by the hundreds testing out my connection on the way.  Anything 7,000 or greater allowed me the download speed I was looking for, but still devoured the rest of my bandwidth (speedtest results of less than 1mbps).