All torrent software kills internet browsing

Discussion in 'MacBook Pro' started by r91, Feb 7, 2012.

  1. r91 macrumors newbie

    Feb 7, 2012

    I am new here and I am really bad with technology so I am desperate for some help, preferably in terms that I can understand.

    So the problem is that all torrent software I have tried (uTorrent, Transmission, Vuze) kills my internet. I never had any problems with this when I was using PC, and I even tried my old PC and it is still okay with uTorrent.

    The weird thing is that the torrent downloads still work. Despite me not being able to use the internet, downloads still happen at a really fast rate. And again, this is for all torrent software.

    So I think the problem is somewhere within my Mac.

    The firewall is disabled.

    What do I do?

    I have all the options for my uTorrent written down if I need to post that... maybe it's using up too much bandwidth or something?

    Thank you!
  2. calderone macrumors 68040


    Aug 28, 2009
    Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_0_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A405 Safari/7534.48.3)

    What does "kills the Internet" mean? If the torrents are downloading you are connected to the Internet.

    And yes, the torrent downloads are likely taking up too much of your bandwidth causing slowness in other areas.
  3. simsaladimbamba

    Nov 28, 2010
    Test your connection speed with, note the upload number your get, which will be in bit/s (Kbit/s or Mbit/s), divide that number by 8 to get the byte (KByte/s or MByte/s) and change the upload limit on your torrent client accordingly, that you have at least half of the measured upload speed free.
  4. Mojo1 macrumors 65816

    Jul 26, 2011
    It's hard to tell what is happening without more information. But I suspect that his torrent software is running in the background transferring the files he downloaded to other users. And that it is either taking up a lot of his bandwidth or his ISP is throttling his bandwidth due to all the data being transferred.

    Turning off the firewall isn't such a good idea either... :rolleyes:

    Downloading pirated files is also a great way to load a Trojan onto your computer.

    It isn't the Mac that's the problem: it's the operator. ;)
  5. that1guyy macrumors 6502

    Nov 11, 2011
    I'm not sure what you're asking, but it seems to me you're saying you can't browse the internet while downloading a torrent or its really slow.

    Well its obviously going to be slow if you're downloading a large file. It depends on how fast your internet is. The speedtest link is great to see how fast your connection really is.

    If you're saying you have no control over your browser after downloading a torrent, then maybe you have downloaded some malware that is messing with your computer.
  6. nikhsub1 macrumors 68020


    Jun 19, 2007
    mmmm... jessica.'s beer...
    I bet he (or she) is uploading stuff like mad, probably without even knowing it. Uploading will kill the bandwidth and make the internet feel like it's not working at all.
  7. quasinormal macrumors 6502a

    Oct 26, 2007
    Sydney, Australia.
    How many Linux ISOs/Wikipedia dumps are you trying to download at the same time? Tried limiting uploads/downloads?
  8. trikky macrumors regular

    Nov 10, 2011
    #8 it is in layman's terms: You screwed up. Not the computer. :)You've got your upload/download settings wrong...likely set at 0 or Unlimited.

    Don't do that.

    Be aware of your internet service limits as far as upload/download speed is concerned, at set the torrent software maximums at about 50-75% of that to give yourself plenty of browsing bandwidth.
  9. thundersteele macrumors 68030

    Oct 19, 2011
    :D :D :D

    Got to keep all those virtual machines busy...
  10. r91, Feb 7, 2012
    Last edited: Feb 8, 2012

    r91 thread starter macrumors newbie

    Feb 7, 2012
    Thank you so much for all of your help so far.

    My speed test shows my download speed 17.51 Mbps and my upload speed at 1.09 Mbps.

    I realise I was really vague in my initial post, I meant that despite the downloads working correctly, I am unable to browse the internet while uTorrent is running.

    This is the same no matter how many downloads I have, and I still have this problem even if there are NO downloads at all and it's just running in the background. And I'm not seeding either at the moment so there's really nothing going on as far as I know...

    So my current uTorrent settings are this:

    Upload - Limit Manually to 1KB
    Seeding Rate: 1KB

    Download - Limit Manually to 70KB
    Stop at up/down ratio 0.10

    Global Limit: 50
    Per Torrent Limit: 20

    No DHT and No PEX

    Queues - Active transfers (8) Active Downloads (10)

    I kind of messed it up I think, I went to a bunch of websites for help and now I think i've screwed it all up completely and I have no idea what to do.

    Another Macbook Pro in my house is having the same problem, but my sister's Mac (not pro) is still working fine with uTorrent running... and so is the Dell.

    I'm really bad at this and I know i've gone wrong somewhere so please be kind! :)
  11. r91 thread starter macrumors newbie

    Feb 7, 2012
  12. dusk007 macrumors 68040


    Dec 5, 2009
    That is just something like uPnP one way that can open ports on the router automatically without you having to forward them yourself.
    As long as you see a green light in the network settings for the port it is all good and you need not change any setting there. In any case it would just be slow and not slow your internet connection.
    I would enable DHT though that is also no solution for your problem.

    With those speeds you should be able to set the limits to 70/1400 up/down without any problems for normal web browsing. With this kind of leecher settings you wait forever for your downloads.

    I'd recommend uninstalling utorrent and delete all setting files and everything and reinstall with default settings. Usually all that needs adjusting is the up limit and down is generally fine on unlimited unless you want to watch streaming videos and you have an unusually fast download which is rather unlikely with such leecher settings at least for big long downloads.

    It may also be your router. I lately had a problem with Modern Warfare 3 that couldn't be solved by any setting I set or by disabling just about any firewall I could find. Only a generic firmware update with a custom config did resolve the problem.
    Though usually slow downs with torrents mean you have to many parallel downloads/connections that just create too much overhead. And if it shows a green light in the network settings the router is usually not at fault.
  13. r91 thread starter macrumors newbie

    Feb 7, 2012
    I managed to get uTorrent back to its default settings, but it still wasn't working.

    So I disabled NAT-PMP (I read this somewhere else) and it's working fine now.

    I have no idea what I did...but it's all good for now.

    Thank you so much everyone
  14. jayhawk11 macrumors 6502a


    Oct 19, 2007
    Am I the only one that feels like if you can't troubleshoot an internet connection, you probably shouldn't be using BitTorrent software?
  15. Dweez macrumors 65816


    Jun 13, 2011
    Down by the river
    No, you are not.
  16. Ccrew macrumors 68020

    Feb 28, 2011
    I like the fact that it seems it's running on all the machines in the house.
  17. 4np macrumors 6502a


    Feb 23, 2005
    The Netherlands
    Some routers have a security feature called something like 'burst protection' or 'hack protection'. Check your router's interface if that security option is available in your router, and if so disable it. This protection also gets triggered by software that uses many connections like peer2peer. A friend even said it kicked in when opening the chat functionality in Eve Online. After disabling the feature (or is it a bug? ;)) you'll see your internet will work perfectly fine after that...
  18. rockyroad55 macrumors 601


    Jul 14, 2010
    Phila, PA
    Do you pause or stop the torrents after they've finished? If you don't, they will be seeding to other users constantly.
  19. r91 thread starter macrumors newbie

    Feb 7, 2012
    I fixed it by disabling NAT-PMP.

    Everything is cool now, it's downloading at a reasonable rate and my internet browsing works perfectly.

    Thanks everyone for your help!

    Be nice now, Dweez, Ccrew and JayHawk... I am a noob girl after all ;)
  20. heisenberg123 macrumors 603


    Oct 31, 2010
    Hamilton, Ontario
    try bittorrent as your software thats what i use and i have no problems browsing the internet even when im downlaoding 2.0MB per second
  21. alphaod macrumors Core


    Feb 9, 2008
    Depending on the Internet service used, most have uploads and downloads that are independent of one another. Basically uploading does not affect your download bandwidth and vice versa.
  22. simsaladimbamba

    Nov 28, 2010
    I have experienced otherwise. If you have 1 MB/s download speed and 100 KB/s upload speed, and download a file via a file sharing client and have an upload speed of almost 100 KB/s (90 to 100 KB/s), your download speeds might get slower, but the overall browsing the www with a browser experience will be slower, as when you load a web page, it loads slower, as the upload speed is limited and the server you download from does not get feedback about what has already been downloaded and what still needs to get downloaded, thus it is slower, even when you don't download a file via file sharing client at almost full speed.
    If one limits the upload speed and leaves a bit room (50 % of the upload capacity), one can download at almost full or full download speeds and still have a fast browsing experience.
  23. Jazojas12 macrumors regular

    Apr 24, 2009
    A little off topic, does anyone know of a network manager for Snow Leopard? So say I could designate bandwidth priorities. e.g. I'm running Transmission (or another torrent app) and I go on an Safari to watch a video on YouTube..currently if the BT app is sucking all of my bandwidth then Safari has to fight for bandwidth and you can't watch the video without letting it sit to load. I know you can limit speeds on Transmission but it gets annoying to limit it then take the limit off after every video.
  24. heisenberg123, Feb 8, 2012
    Last edited: Apr 22, 2013

    heisenberg123 macrumors 603


    Oct 31, 2010
    Hamilton, Ontario
    other than changing the limit in transmission what would you suggest this other app did to make it better/easier?
  25. simsaladimbamba, Feb 8, 2012
    Last edited: Apr 18, 2013


    Nov 28, 2010
    You can limit down and upload speeds:


Share This Page