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When my torrent client(transmission on ubuntu) is on, I can barely browse the web.

Manually closing the torrent client or reducing its speed every time I use the browser and then bringing it back to normal when I am not browsing the web is too bothersome.

Is there a client which does this automatically?

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You'll need something more than a torrent client. Because it is more than likely that your torrent client can't see traffic from your browser. – surfasb Dec 12 '11 at 19:07
Yes. Maybe on the lines of the torrent client having a browser extension to inform it when to switch off and when to switch on. – Abhijith Dec 13 '11 at 1:47
up vote 1 down vote accepted

You might try something like NetBalancer. It lets you set priorities for the network traffic from different processes. I haven't used it myself, but it looks like it would do what you want.

For a Linux system, try using Wondershaper. Hopefully you're using a Debian based distro, as I'm not sure Wondershaper is in the yum repository. Install Wondershaper with the command

sudo apt-get install wondershaper

Then add these lines to /etc/network/interfaces

up /sbin/wondershaper <interface name> <downspeed> <upspeed>
down /sbin/wondershaper clear <interface name>

Wondershaper is already set up with scripts that cause it to prioritize traffic such as HTTP, SSH, and VOIP, while giving a lower priority to bitTorrent traffic.

I'm not at home to test this on my Linux system right now, so I'm not absolutely certain that this is all correct, but here is where I got it from if you need clarification.

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NetBalancer is not automatic, they are looking for something to automatically balance traffic between a bittorrent client and a browser – Moab Dec 12 '11 at 18:18
Do you not just set the priority for each process and then leave it? That's what it sounded like to me. – SaintWacko Dec 12 '11 at 18:26
@SaintWacko, This'll work for me if I can set priorities per application and not every time a network-using-process is started. Another point I didn't make clear is that I use linux. Any idea on an app for linux? – Abhijith Dec 13 '11 at 1:57
Added some information on an option for Linux. By the way, did you get notified when I edited my answer? – SaintWacko Dec 13 '11 at 16:47
Thanks. I'm trying this out. About the notification, I got a notification about 'Lazy badgers' answer below, but not for your edit and comments. I need to check if I should be making changes in my account settings. – Abhijith Dec 14 '11 at 3:55

Fresh utorrent do it, AFAIK it has linux-port (know nothing about porting quality)

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'Fresh'? You mean the latest? also any specific version number? – Journeyman Geek Dec 14 '11 at 0:22
@Lazy Badger, Why is this port called utorrent-server? We want a client right? – Abhijith Dec 14 '11 at 4:00
@journeyman-geek - BW-control was introduced, as I recall, in 3.0. "µTorrent Server, an alpha version available immediately for download here, is intended for users seeking a fast, commandline only BitTorrent client with remote web-based management." - quote from form, thus "server" is nlyname – Lazy Badger Dec 14 '11 at 17:36

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