Saturated Upstream on 10mb (torrent related)

[Jim galbally]

ok ive got 10mb and thats an upgrade form 1mb (so my upoload has gone from 128k to 512k)

ive tested uploading and i can definately get these faster up-speeds

anyway, whenever i start getting the upload above the 10kb/sec mark it saturates my connection and the download speed drops dramatically.

For example... i'm downloading a file from a FAST ftp site (so i can get 1000+kb/sec)

with no upload its fast
with 10kb/sec upload its fast
with 20kb/sec upload it drops down to well under 200kb/sec (normally<100kb/sec)

now 20kb/sec upload is nowhere near the limit of my 512k connection.

so, what i'm getting at is.

does the bandwith get saturated at the same level even if you have a faster upload speed cap set.

what i'm REALLY getting at with all this is... is my connection fooked, or is it right that i have to keep my upload speed below 100k

[Chrysalis]

I noticed with 2mbit I could cap my upload to 80-90% and it had no affect on download speed. With 10mbit if I cap to say 30kB (50%) I lose about 25% download speed around max 7-8mbit, I actually have to cap to 20kB or lower for it to not have an affect. You need to remember if you have upgraded from say 2mbit then you have a increase of around 150% in upstream but 500% in downstream so the % of your upstream capacity needed for acks is now higher.

[JonathanLH]

i suggest the poster use dumeter (or equivalent) to check that his upstream is less than 64KB/s, since the torrent client may be set at like 20KB/s upload, but may be using more. (can add another 3-4KB/s for DHT for a start)

[Mr Clean]

I set my torrent client to 40kbps up and have no problem downloading at high speeds. Usually get anything between 200 and 600 down. In reality though, you are never gonna max out your download on BitTorrent.

With a high speed connection, like 10Mb, you need to find better sources for your downloading requirements than BitTorrent IMHO.

That's my two penneth's worth on the subject.

[JonathanLH]

I would have to disagree, private torrent sites pretty much always max out my line even with the upload set to 3 KB/s. However you need to maintain a decent ratio with them, hence I use a USA dedicated server, and FTP off it sometimes instead.
I'm guessing I can't post the names of the private torrent sites, but feel free to PM me

[Jim galbally]

jon, i can monitor the total bandwith (with overheads) and it definately drops the downstream significantly if i hit more than about 15kb/sec (actual).

as for download methods, i tried using usenet lastnight and F**K me it's quick! only problem is it looks like NTL block all the "good" newsgroups, so not much worth downloading on there

[JonathanLH]

How are your modem power levels? I find I can upload at about 40KB/s (inc overheads - dumeter) before downstream starts to suffer.

[Mick Fisher]

I found the upload to behave perfectly normal with BT since going to 10meg. I connect through ethernet and use a tjet modem.
The only minus I have noticed is the faster speeds seem to bog my system down to the point where it is really noticeable, whereas on 3meg I didn't really notice it.
I'm using Az which of course is well known for it.
No big deal as I rarely use BT, only experimented with it as a result of this thread making me inquisitive.

[JonathanLH]

BitComet and uTorrent are best ones resource wise, as they are written in C++ instead of Java

I'm using Az at the moment with my download and upload set to just under 1/3 of my connection max (400K down, 20K up) and I don't normally even notice it running. The upload is almost always running at max, but the download rarely gets even remotely close.

[Jim galbally]

power legals and signal are all perfect.

i do have the cable modem off a 2 way splitter with the STB tho, not 2 seperate lines into the house, could that make a difference?

[grubbymitts]

Originally Posted by Jim galbally

i tried using usenet lastnight and F**K me it's quick! only problem is it looks like NTL block all the "good" newsgroups, so not much worth downloading on there

Unless you have Topsite or dumpsite FTP access, newsgroups are the fastest method of getting your...ahem...linux distros. Alas, NTL doesn't supply all the groups (but the ones it does supply are quite good - if you like your linux distros with a touch of swedish love to them!) but you can find good, cheap suppliers of unlimited newsgroup access with *all* the newsgroups for $14.95 a month. works out at less than a tenner. Once you buy access and see what really is available on Usenet, you'll never go back to P2P again.

With Bit Torrent, even with your upload capped and on a private tracker, you rely on the uploading seeds to have a fast connection, and then there's the ratio to contend with and the fact that you are flashing your IP address for the whole world to see.

With FTP you either have to have leech access (which means you know the Siteop via affil or hardware/software donation or you can Pre 0 day stuff) or you're stuck on a ratio of, usually, 1:3 and constantly battling couriers from warez groups to get your stuff online before they do. When you only have 200 - 512k upload, this is an uphill struggle and you'll never find yourself getting access to a Topsite and could find it difficult to be accepted on most of the dumpsites too.

With Usenet, it's leech, leech, leech all the way baby - and most things get posted to Usenet less than an hour after hitting the FTP tier.

*Standard Disclaimer*
No, I don't have, never had nor do I expect ever to have access to Topsites/dumpsites.
Always remember the golden rule of any scene - past and present - a game/utility/film worth playing/using/watching is worth buying!
And you really can get Linux distros from Usenet. Really. I'm not kidding. They're on there!

---------- Post added at 17:49 ---------- Previous post was at 17:41 ----------

Originally Posted by JonathanLH

BitComet and uTorrent are best ones resource wise, as they are written in C++ instead of Java

But isn't BitComet the one that's getting steadilly banned from many of the private trackers for not following the Bit Torrent protocols and allowing leeching of files when the private flag is attached to the torrent? From what I was reading a little while back on Slashdot, any IP address running BitComet is likely to be black listed from these trackers.

I used to use Azureus - if you set your upload to 10k/s you were more likely to get full whack down speed - but try keeping a ratio with that and the damn thing used to fill all my memory up. ABC was a good torrent client too - very little memory footprint.

Bring back Kazaa - all is forgiven

[JonathanLH]

BitComet is banned from several private trackers, due to the DHT system running when it shouldn't.
Let's just say that my BitComet thinks it's BitTornado :P
AZ doesn't run very well on my 10mbit unmetered server (which is always at 10mbit outbound on BitComet).

[Jim galbally]

ok the more i look into this the less i think it's saturation...

whenever i've got azureus running my connection runs like a dog, doesnt matter what my upload/download speed is. at the moment ive got 8k up and 60k down and normal web browsing is slow!

do NTL do any silly things with bittorrent users? i'm not using the std port by the way.

if i kill azureus and give it 10mins or so then my connection goes back to normal and i can get 1mb/sec downloads happily

[JonathanLH]

AZ is quite resource intensive, being Java
are you using USB? since that is also resource intensive (get ethernet)
NTL do not block and bittorrent traffic - just downloaded a "linux iso to do with crashing weddings" at 10mbit