Saturated Upstream on 10mb (torrent related) - Page 2

Jim galbally · 30-12-2005, 15:13

NTL250 modem with ethernet. ive tried it on my old etherlink III (which ive been using since day 1 of ntl BB with STB as i can change PCs and keep the same max

) and just tried with my builtin NIC to see if the old ELINKIII was crap. no change.

Az is using 128mb memory and about 30% CPU but thats nothing too major. i've got a pretty well specced PC (AMD 3200+ w/ 2gb). there is a LOT of **** running on it tho and could do with a fresh install of XP.

---------- Post added at 16:13 ---------- Previous post was at 16:11 ----------

10mbit? the most i've ever seen down is about 2mbit, its normally ~1mbit down tho, thats on multiple torrents to keep the speeds up.

grubbymitts · 30-12-2005, 18:26

How many connections are you allowing? The more connections you allow with BT, the less chance you will get to surf normally. It's like a miny DOS attack when you think about it. You have all these people sending or taking information off you that the pc has to allocate more and more cycles to, so when you want to do a bit of surfing, you are fighting all these other people to get out onto the net. XP makes it a lot easier (Win 98 was nigh on useless if you wanted to surf and torrent at the same time) but it can still be slow due to the amount of things XP runs compared to other Windows installs, which are all trying to get a piece of CPU ass

I gave up on torrents almost a year ago but if I recall rightly:

If you are using Azureus and not getting the yellow smiley face then dump your router. If you still have the green not so smiley face then you ain't got any remote connections and, basically, tough, but if you can find your IP address (not your proxy) then go into options and put your IP address in the bind your ip box - this should help you to get the yellow smileys and the better speeds - but not on Piratebays trackers. They are notorious (well they were) for not liking non-scandanavian IPs.

Try another client. Azureus, whilst probably the best overall in terms of design, style and support, suffers greatly being Java based and power hungry. It may only be using 30% CPU when you looked at it, but keep watching the beast - it'll shoot up and eat into your memory the more connections you allow.

Or better still - dump BT. P2P is a strange irony in this security conscious world. We have virus killers, pop up blockers, advert blockers, content filters, firewalls, routers and spyware blockers and destroyers, but we'll still allow 200 strangers access to our pcs in order to download a crappy cam of the latest blockbuster.

Jim galbally · 30-12-2005, 19:40

firstly, good point abou binding to IP, some of my stuff picks up the NTL webproxy, so i'll slapped it in manually just incase.

secondly (and more importantly) ive just been doing some experiments.

at 8k upload connection = fine
at 10k upload it starts to get saturated and i drop down to about 50% download
at 15k upload it goes really tits up and thing slow down dramatically

at 40kl upload? i may aswell be on a 56k modem!

now to me thats getting saturated WAY too soon!

test was done by watching DU meter whilst downloading from fileplanet (im a subscriber so get the full 10meg speed) whilst chaning th global upload speed in azureus

please note that i monitored the upload speed with DU meter and not once did it get any where near the full half meg!

JonathanLH · 30-12-2005, 19:47

sounds like the upstream is heavily used in your area, know anyone else on ntl who you could talk to (although they could be on a different upstream channel)
maybe BBKing would let you PM him your MAC address and he'd check it out for you

Jim galbally · 30-12-2005, 20:46

who's BBKing, an NTL guy?

I'm in bromley by the way

Chris W · 30-12-2005, 20:52

BBKing is a member of this forum- however if he wants to / can help he will be along to offer, so please let's see if he offers first

Jim- have you tried tested your upload away from bittorrent, eg any speed tests, setting up an ftp server on your pc and getting friends to download, sending via msn messenger (which fyi normally gives crappy speeds anyway) etc etc?

Jim galbally · 30-12-2005, 21:52

no ive not tried anything except bittorrent, i could try uploading to FTP at the same time and repeating the test. i'll try that tomorrow

Chrysalis · 31-12-2005, 16:54

the nature of torrents you will have a very high pps which dispite what you think puts heavy load on your network hardware higher then low pps with max bandwidth, the pc may be at 30% which itself is fairly high for downloading but how do you know your modem isnt breaking a sweat?

Matth · 31-12-2005, 22:44

http://www.cfos.de/speed/cfosspeed_e.htm

Might be worth a try, especially at the special price.

It seems the idea is it learns the max up and down speeds (ideally, you force the issue, with a fast downlad or speed test, then a fast upload - FTP to webspace, if that goes fast enough), then slots the traffic together appropriately.

Ignition · 31-12-2005, 23:13

Quote:

Originally Posted by JonathanLH

sounds like the upstream is heavily used in your area, know anyone else on ntl who you could talk to (although they could be on a different upstream channel)
maybe BBKing would let you PM him your MAC address and he'd check it out for you

Nope if upstream were overutilised it'd be Pete Tong all the time.

Is a router involved in this anywhere? Is WinXP SP2 being used? Has the max connections tweak been done?

Jim galbally · 01-01-2006, 11:38

**** i forgot about the max connection tweak! i'll enable that and see what happens.

no routers involved anywhere. also modem is a 250 which i thought was the bst one available?

---------- Post added at 12:38 ---------- Previous post was at 12:00 ----------

ok ive just done all the usual tweaty bits (MTU, RWIN etc. etc) plus sorted the XP tweak for outbouny SYN connections, AND installed that QoS program.

no change...

altho the qos proggy is making my web browsing much nicer whilst downloading :top: so i'll probably keep it

BBKing · 04-01-2006, 22:01

Jim's pointed me to this - I was heavily engaged in sitting in an armchair, breathing heavily, full of food at the latter end of December.

Not a bit expert on BT, but do be aware that any heavy P2P use by you or others in your area will inevitably degrade things somewhat. Azureus being a Java client does tend to eat performance.

Anyway, I can check in case there is upstream congestion, if you can give me your modem's MAC.

Jim galbally · 05-01-2006, 16:43

BBKing, i'll get the mac when i get home.

as for BT... i've repeated the test without bittorrent (using FTP uploads/downloads)

and it seems that it starts to saturate at 15kb/sec upload. it starts to get bad at 20kb/sec and anything more than that and the connection sh*ts itself. (the reason those figures differ significantly from the BT ones is i've got a lot of overheads going on with BT eating "invisible" bandwith)

i'm sure that cant be right considering i have a theoretical max of 64kb/sec down

---------- Post added at 17:43 ---------- Previous post was at 16:39 ----------

my mac:
Admin Edit (Stuart): Mac address removed. There are people who will use these addreses to clone your modem, and download on your account.

JonathanLH · 07-01-2006, 00:00

do not post your mac address on a forum, as you are inviting it to be cloned since it's a valid mac on ntl's system...

dunkyb · 07-01-2006, 13:16

I am experiencing this issue too. If uploading at even 8KByte/s (out of max 60+) then downstream suffers immensely.. About 150 - 300Kbyte/s downstream!! Now my connection has always been pretty ****e, with fluctuating pings (Can't believe a telco haven't been able to sort it out in a few years.. but hey). Downstream is near the full 10MBit/s whilst not uploading.

Even on 3mbit I could upload at 20 comfortably.

BBKing, if you're still around are you able to check congestion on my UBR, if i PM you my MAC?

P.S. Forgot to mention, start getting about 25% PL to NTL's routers when uploading at about 20KB!