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Downspeed vs Upspeed


Divine1

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Posted

When i m down loading a torrent why does it also show a dowspeed AND an upspeed for the same torrent? Usually the upspeed runns higher than the downspeed. If downspeed is the speed of the data being sent TO my computer and upspeed is the speed of data being sent FROM my computer why is upspeed applicable when i m downloading? I reviewed the FAQs thoroughly and the General Topic area of this forum and I dont believe this issue was addressed (could be because it is so simple and i m just too daft to grasp it.. i dunno).. Please advise......

Posted

When you leech(download) with a Bittorent Client, you also upload the data you already have to other people, otherwise torrents would be incredibly slow.

Posted

ok.. so what u are saying is tat as the data downloads it is being simultaneously uploaded? hmmm ok... but if its being upspeeded at a much faster rate than it is being downspeeded am i not being negatively affected (i.e. it would take longer to complete the download)?

Posted

No, acually, from what i can understand the protocol favours Uploading to people that upload back.

So having a higher upload should speed up your downloads because you connect better to other leechers.

Posted

thank you Yenkaz u have been very helpful.. Its interesting tho tat my cable modem shows i m connected at 100Mbps and yet i have never had an download (downspeed) rate greater than 12.5kbs (yes i know tat the downspeed also depends on the source speed as well however...) Also i checked Speed Guide and the port i am using shows up as 'not connected' i have randomized the port settings but all to no avail... is tis relevant? would getting the right port (one tat is 'connected') increase my downspeed rate?

Posted

The 100mb/s refers to your network LAN connection, not the actual internet connection. It would seem you have a speed problem if your download speed is slower than your upload speed... Run through this checklist (and check the link in that post) just in case. If you're getting a problem with the port checker, you have to forward your ports. Check portforward.com for details on that.

Posted

@ultima: now I'm confused, even though I got an idea now about the difference between the LAN connection and the internet connection (I upgraded from 1500 MB to 2000 MB and it still shows only 1500, I guess I have to call the provider?)

I am now confused because even though I knew before that the upload is supposed to be higher than the download (which it is in my case about the double) but my download speed is also slower than the upload and I thought that was also the way it was supposed to be, because I thought that's the way the upload becomes higher than the download. If I understand you right, that's not neccessary correct ?!?!

I'm far from being a technical expert and I did get an NAT-Error when I started with Azeureus, but I didn't quite get all the technical stuff with the port forwarding, open my firewall, choose different ports etc. since it still seemed to worked. I basically tried utorrent the very next day and since I liked it better and it also worked I didn't bother with the Azureus error any further, but of course my settings are basically still the same.

I noticed that red dot on the bottom saying, that nobody can't connect to me, but I'm uploading and I have a whole bunch of peers in my list and my ration is between 1.4 to 2.4. On the other hand I'm trying to download 3 torrents at appr. 700 MB each for 48 hours. What would a "normal" time frame be?

Posted

Can't reply to everything, but somethings I can explain. The whole thing with LAN-speed is pretty simple. A normal network runs at 100 mbit/s and the same goes between a modem and a computer. The speed from the modem and the internet depends on your ISP.

I also see faster downloads then uploads, but I think the reason is simple. Speed is dependent on many things, peers speed, peers slots and how many any there is downloading from them. The number of peers of course also plays a part. With upload your connection max out pretty fast, giving a very fast upload. This since everyone that can, connect to you. The download is dependent on other people and can thus vary a lot.

For example. 5 peers are seeding to 15 people. The 5 peers have 3 slots open and a 1 mbit line. That means that each peer will have 3 leech each, downloading at 0.3 mbit. Of course, bit torrent is more flexible than that, but this is a rough estimate to show the general principle. It doesn't matter that you have a 10 mbit connection, if the guy(s) your are loading from only have 0.3 mbit. And the good thing with bit torrent is that you can connect to 100 peers with 0.3 mbit and get a total speed of 30 mbit (given that you have that type of connection.

The port forwarding I don't get. If you have it red, people shouldn't be able to connect to you. Maybe someone else will be able to answer that one. Seems like it works at least and that is always good.

Posted

@scottee

Red dot means that other ppl can not connect directly to you via PEX or DHT and al this technical stuff ;-)

µtorrent uses a specific port from the 65000+ ports your computer have to connect to other computers. When other people try to connect to you to share pieces with you they knock on the port your µtorrent uses and ask it to have fun together ;-)

Your Modem/Router (this technical stuff between your computer and the others on the internet) now recieves this conection attemps from the other filesharers but when you have not told this piece of hardware that it has to PORTFORWARD the pieces to your maschine all the other computers could not have fun with you. (just like a big dady that stands behind the front door and let no one up to you in your room to play.

Refer to http://www.portforward.com to see what you have to enter to tell your "Dady" to let the nice filesharing guys thru to you ;-)

Start here http://www.portforward.com/help/pfprogression.htm if you are just a user who want to have fun with ohter nice filesharing guys but if you don't care about technical stuff and only want "things going".

Btw. you are right. it is not neccessary correct that your UL is always higher than your DL. This depends first of all on what kind of connection you are on. and if others can connect to you directly (they can't in your red light case.)

Im on a Adsl line with 2000kilobits DL and 200kilobits UL. I have told my "dady"(this modem/router stuff) how the nice filesharers can reach me and my µtorrent programm. i can get downloadrates in healthy swarms like average 180-200kiloBytes down (thanks to the fat 100Mbit guys in sweden or canada) while I'm just uploading at average16 KiloBytes. (This is NOT leeching because more upload bandwith is not possible for me. But µtorrent "knows" that so i will not be punished by low DL rates.

Posted
Btw. you are right. it is not neccessary correct that your UL is always higher than your DL. This depends first of all on what kind of connection you are on. and if others can connect to you directly

Not entirely true. Whether you connect to them or they connect to you won't effectively alter the speed. A connected user (in either direction) will both be downloaded from and uploaded too. The reason to port forward is that when other peers can connect to you, you generally have many more peers to connect to and can thus choose faster peers to download from.

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