Old_BitComet_Forum's BLOG

By kluelos
From forum_name, BitComet Forum
I understand your question very well, and while it may not be quite full of jargon, you're also not misusing any and the question is clear.

Bittorrent and P2P generally is not at all like anything else you've used before. Most downloading heretofore has involved a large server with a fat pipe and it's all been a) one-way, server to you, and one-on-one, just the server and you.

In P2P, the source of the files is you, and people just like you, with computers like yours and connections like yours - not the latest or greatest or fastest. As you download via P2p, you also upload to others. Get a piece from someone else, share that piece with others. With Bittorrent, you can't fail to do that because it will badly harm your download speed if you don't upload too.

Your connection is asymmetric: your download speed's a lot faster than your upload speed. It takes more time for you to upload a given amount of data, than it does to download it, irrespective of the source. So when your download reaches 100%, you will have downloaded more than you've uploaded. This is reflected in your U/D ratio, also called your Share ratio. Your client will show you what this ratio is for a given task. When this ratio reaches 1:1 it means that you've uploaded as much as you have downloaded -- given back as much as you've taken.

Since this community depends on people like you sharing, that's considered the minimum that's expected of everyone: give at least as much as you take. When your download reaches 100% it is complete, yes, but then your client will automatically change modes and begin uploading (seeding) exclusively. You should check your ratio to see if you've reached the point where you want to stop seeding. If you stop when your download is complete your ratio will probably be terrible. Folk who do that as a general rule are disliked. Enough people doing that would eliminate this community.

You can set the ratio you want to stop at, or the amount of time you want to spend seeding (at least in most clients). For example, stop when I've shared to 1.5:1, or stop after I've seeded for 3 hours. Or you can keep seeding until there's nobody left who wants to download. Or if you're using a private tracker that requires you to maintain a minimum ratio, you may want to keep the task seeding in hopes that somebody else will show up and want a few bytes from you. (This is a common situation with those sorts of trackers, as everybody tries to improve their ratios.)


Hey, you thought Bittorrent's learning curve was steep? You ain't seen nothing yet. Wait until you dive into digital video, which is your second question. Rocket science is easier.

By ellgie
From forum_name, BitComet Forum
Yes indeed, the learning curve escalates!
Your response is exactly what I need, that is to understand how this works. It makes perfect sense that peer-to-peer (I even have to get used to those abbreviations! p2p) relies on true sharing. So where do I find my UD ratio? I hope it is good so far as I know it is only correct to give as you receive.

Occasionally I suspect that I have bitten off more than I can chew; but I also love to learn to lets continue this hourney. You are a good teacher. Thanks.

By cassie
From forum_name, BitComet Forum
Hi,


Usually, you can find it to the right of your 'Seeds/Peers[All]' column, on the main window (where your tasks are listed).

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