uTorrent + slow web browsing

Gimpymoo

Gimpymoo

Gimpymoo

Soldato
Joined
31 May 2005
Posts
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Location
Nottingham
Having anyone else having problems with the above combination?

It is not a firewall/port issue and have set both upload and download to 10 Kb/s.

Web browsing simply becomes very slow/disabled when uTorrent is running. uTorrent is able to connect to the internet fine.

Have tried disabling DHT. Bit Tornado appears to be working fine.
 
when download speed is high, ive noticed the whole computer pretty much starts to crawl with uTorrent. Happens with bittcomet too but not as extreme. possably due to the realtek ethernet on my board, im not sure, but i deffinatly have the system slowdown effect with utorrent.
 
wait with download and upload speeds set to 10KB/sec max your getting slowdown with any web browser? sounds to me like possibly the version of utorrent your using is abit unstable or has some problems to me.
 
Since utorrent uses the bit torrent protocol, by nature of the protocol it opens a large number of connections. If your router has a slow CPU then all the connections utorrent demands from your router causes it to slow down, the same as if your encoding video on your pc, other programs start to run slow and take longer to respond. Therefore your internet browsing will seem slow and sluggish to respond. You can limit the number of connections utorrent is allowed to have in the utorrent options, this should aleviate the problem but could cause slower download speeds due to there being less peers to download from.
 
Your saturating your upload bandwidth. If you do this, your download speeds will suffer.

I used to be on 1Mb, and I couldnt have my upload speed set to more than 10kbs.

Since going onto 10Mb, I set my upload speed to approx 50-60kbs.

This is around half my upload bandwidth.

I am on cable.

My upload is 1/10th my download. Hence my upload speed max at 102kbs

The reason the web slows to a crawl when your saturating your upload is due to nature of TCP/IP. Because HTTP uses TCP, your web browser is competing with the torrent for upload bandwidth. Hence it doesnt send out ACK (Acknowlegement of receipt of data) back to the HTTP server. Because the server doesnt receive these ACKS fast enough, it throttles the bandwidth to your machine. (It thinks your on a slow line). And the whole design of TCP is ensure that a fast server doesnt overload a slow client.

Phew.

So yeah, cut your upload limit. It depends what your upload limit is, but aim for your torrent client to use approx 40-60% of total capacity. Or yeah, it will kill your browsing.
 
On 1mb here using Utorrent 1.6, have my upload set to 20k, and my download rate unlimited, web browsings fine here, only goes a tad slow when im downloading at about 120k which it would, but still its hardly noticable anyway.
 
Some routers definitely have issues with the amount of virtual connections that Bittorrent opens up. I've had my Netgear rangemax router regularly stop all TCP IP activity due to this. As soon as you reboot it, connectivity returns to normal.
 
My Belkin router is the same. I have to set max conection to around 45 to try and stop the router from freezing up, and even this low value is a safe value, just works better. sometimes the router will reset itself and recover, but more often then not it will need a manual powercycle as the "internet" led just flashed forever and needs the reset to stabalize :|
 
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