There have been a few concerns regarding upload speeds, so i decided to post this here, having previously posted it in an answer to a question regarding slow upload speed.

There are many things that determine your upload speed:

1. Leechers - there has to be someone wanting/downloading the file

2. Other seeders - How many other people are seeding, if there are 20 seeders then not everyone will be able to upload to just 1 leecher

3. popularity of the torrent - same concept as no.1, you need people downloading the file

4. Size of file/Partial seeders - The bigger the file with more content (packs) then expect there to be partial seeders (people that only download bits of the torrent and then only upload)....they are shown as leechers as they have not completed the full download but they choose not to download more so you won't be able to upload to them.

5. Speed - both seeders and leechers speed have to be taken into consideration, if there is 1 leecher that can download at 100Mb and 20 other seeders that can only provide 20Mb then you will most likely deliver the other 80Mb (limited by your upload speed).....On the other hand if there are 20 seeders with upload speed of 100Mb each then that 1 leecher will probably only download from 1 or 2 seeders and not neccessarily you.


It is also important to realise that there could also be a problem with your connection:



1. ISP Throttling - your ISP could slow your speeds (even though you pay for fast speeds) for p2p traffic. You could check your ISP FAQ/Help pages to check if this is the case.

2. Connectability/Forwarding Ports - if your tracker shows that you are not connectible while you are downloading a torrent from there, then it is possible your ports are not forwarded properly. Check the tracker FAQ on connectibility to learn how to overcome this (most trackers have a helpful guide on fixing this)

3. Understanding your speed - as silly as it sounds to some, it can be confusing. If your speed test shows Mb/s (MegaBits per second) then devide by 8 to get the MB/s (MegaBytes per second) download/upload speeds.