utorrent and web browsing

[ayaha]

I have a huge problem with utorrent. I am using 2.0 rc2, but I also had this problem with 1.8.5. The problem is that some torrents cause my http connections to be very slow to unable to connect at all. All other connections are fine, like irc. I really have no idea what is causing it. Some torrents will download at 1MB/s and I have no problem. Other download at 300KB/s (and have less connections) and destroy my ability to browse the web. This only happens on the pc that utorrent is running on. Other pcs on the network are unaffected.

edit: I probably should have posted this under troubleshooting since it isn't a problem with utorrent speed.

[moogly]

You have to set the bandwidth in uT with conservative settings:

http://forum.utorrent.com/viewtopic.php?id=15992

See § SLOW/INTERRUPTED INTERNET CONNECTION OR OFFLINE TRACKERS

[ayaha]

I have already set conservative settings using the speed guide. I have also tried the other things mentioned in that post.

example 1:

3 torrents running. total down speed, 1MB/s, up speed, 45KB/s. total connections 200

web browsing is fast

example 2:

1 torrent running. total down speed, 100KB/s, up speed 20KB/s. total connection 20

can not browse the web

I am wondering if this is a vulnerability in utorrent caused by bad peers.

I also have other problems, like utorrent ignoring my cap on upload bandwith. It is set at 46KB/s but the other day it was uploading at 70KB/s for hours. And setting bt.transp_disposition to 5 doesn't seem to disable uTP because when I look under the peers tab it says uTP by the ip of some peers after restarting utorrent.

[Switeck]

bt.transp_disposition = 5

AND you restart uTorrent...

...and uTorrent still makes/gets uTP peers/seeds?!

Screenshot it please!

[ayaha]

oh nvm about the uTP thing. it seems to be disabling fine. going over the upload cap isnt that bad of a problem, but being unable to surf the net and torrent at hte same time is

[Switeck]

Do you have net.calc_overhead set to true in advanced settings?

That shows what was previously hidden in earlier versions.

TCP network overheads can be quite large, over 10% typically...increasing to possibly 20% with severely bad settings.

[ayaha]

Yes, net.calc_overhead is set to true.

Strange. This torrent right now, i let it run for about 30 minutes and the problem went away.

I just found this thread about NOD32 + utorrent. I am giving this a try, and i am guessing with a high probability that this was the problem.