µTorrent Community Forums

hofshi

Member

Bandwidth allocation (Low / Medium / High)

does anyone know what this does?
thanks...

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1c3d0g

Member

Re: Bandwidth allocation (Low / Medium / High)

It gives that particular torrent a higer/lower - depending on what you set it to - priority (bandwidth-wise) compared to the others.

Last edited by 1c3d0g (2005-11-22 04:23:27)

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boo

Member

Re: Bandwidth allocation (Low / Medium / High)

1c3d0g, that should be added to the FAQ, I checked it and it hasn't been added.
I hope firon takes a look at this thread so he can add it to the FAQ.

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hofshi

Member

Re: Bandwidth allocation (Low / Medium / High)

Thanks.
How does this differ from the up and down arrows?

Last edited by hofshi (2005-11-22 04:24:52)

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1c3d0g

Member

Re: Bandwidth allocation (Low / Medium / High)

Now that is a good question...I'd like to think that the up/down arrows are a more fine-grained way to tweak the torrent priorities, but I'm not so sure about that...

Edit: Boo, you're right, it should be added to the FAQ. But you'll have to ask Firon to include it...

Last edited by 1c3d0g (2005-11-22 04:29:16)

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hofshi

Member

Re: Bandwidth allocation (Low / Medium / High)

I noticed that the up/down arrows only work on torrents in "downloading" status.
Maybe the Bandwidth allocation is supposed to work on the torrents in "seeding" status ?

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splintax

Member

Re: Bandwidth allocation (Low / Medium / High)

I thought that the up/down arrows did nothing, and the bandwidth allocation was the only way of choosing prioriy...

Guess we'd better wait for the official word

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boneill

Member

Re: Bandwidth allocation (Low / Medium / High)

afaik the up and down simply means that if you limit utorrent to 2 downloads at a time, and then start 10 downloads it will start with the top 2 downloads and work down the list.  it doesn't actually effect bandwidth allocation

hofshi

Member

Re: Bandwidth allocation (Low / Medium / High)

Oh, thanks for that info.
so the only prioritizing is with the Bandwidth allocation? Does it prioritize seeding torrents as well as downloading torrents?

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spriseris

Member

Re: Bandwidth allocation (Low / Medium / High)

the up and down arrows are honestly nothing to do with priority, only to do with queuing.  bandwidth allocation is the only way to prioritize but i wish i had some more concrete answers as to *how* it works.

Firon

Administrator

Re: Bandwidth allocation (Low / Medium / High)

http://www.utorrent.com/faq.php#Why_do_ … torrent.3F

bandwidth allocation (low/normal/high) gives torrents relative priority on available bandwidth, I guess.

jroc

Member

Re: Bandwidth allocation (Low / Medium / High)

yea. I use it to give me a better upload speeds on torrents im seeding. Never tried it for downloading yet.

spriseris

Member

Re: Bandwidth allocation (Low / Medium / High)

a little more about what i've discovered:
my max upload rate is 38kBps
when downloading 2 torrents simultaneously, i set both bandwidth allocations to normal, and they both upload at 19kBps.
i set the second torrent to low.  the first torrent now uploads between 24 and 26kBps, and the second one uploads between 12 and 14 kBps.  my download rates however appear to be unaffected.  (note: these torrents have been running for a very long time, and are going rather slow regardless, between 20 and 40kbBs, with sometimes spikes to 100kBps)

Firon

Administrator

Re: Bandwidth allocation (Low / Medium / High)

I could probably add the bandwidth allocation to the FAQ but meh, I don't think it's worthwhile

IDoSI

Member

Re: Bandwidth allocation (Low / Medium / High)

Sorry, but I have to disagree. 2 of the people I recommended µTorrent asked me what Bandwidth allocation does, and I couldn't explain quite well as I'm not sure I understand it yet. I really think an explanation to this feature should be added to the FAQ.

Thanks

Timka2

Member

Re: Bandwidth allocation (Low / Medium / High)

I could probably add the bandwidth allocation to the FAQ but meh, I don't think it's worthwhile

And I really think that an explanation to this feature should be added to the FAQ.

Casper42

Member

Re: Bandwidth allocation (Low / Medium / High)

Without getting into the exact math behind it (Because only Firon knows that), Bandwidth allocation affects your upload speed for seeding torrents.

It goes like this, if you have 64kbps upload cap and your seeding 2 torrents and everything is set to normal, then the 2 torrents will each get approx 32kbps upload.

If you set one of those torrents to "Low" then it drops down to around 16kbps and releases its excess bandwidth.  The other Torrent, simply because its higher than Low takes up the remaining bandwidth.  Now you have a 16/48 type split.

The same goes for Normal vs High.  If you set a Torrent to High, it will TAKE some of the bandwidth from the other seeding torrent and knock it down to a lower state.

Low vs Low should be an even split and High vs High should also come out even.

Think of it like this.
Low gets 1 upload "slot"
Normal gets 2 upload "slots"
High gets 3 upload "slots"
Add up the total number of slots your using = TotalSlots
Then to find the percentage of yer total bandwidth each Torrent is allocated, take "[MySlots/TotalSlots]"

Keep in mind i pulled those numbers from my arse, its just to show a general idea how it SEEMS to work.

Switeck

Member

Re: Bandwidth allocation (Low / Medium / High)

True upload slots per torrent is something different than what Casper42 is talking about.
He said: "Low gets 1 upload "slot""

Upload slots on a torrent don't change whether bandwidth allocation is set low/medium/high. So if it's set to low, then the upload slots on that torrent may be uploading at less than 1 KiloBYTE/sec. This can severely impact the download speed on that torrent, as peers receiving data that slowly are far more reluctant to upload back.