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Thread: Ktorrent slow and slowing down internet access

  1. #1
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    Angry Ktorrent slow and slowing down internet access

    When I am running Ktorrent it takes about 30 seconds for a web page to open, in stead of 1 or 2 seconds. The download speed is very slow 200B/s and the status of most of the torrents is "Stalled". If have opened TCP and UDP ports 36477 4444 6881, 7881, 8881 and added them to the port forwarding list in my router. No difference. Any body know what I am missing.
    ASUS F2A85-M, AMD A10 4.1Ghz 4 Core, 8GB RAM, 250GB SSD Samsung 850, Radeon HD 6970, Open GL 2.1, Kernel 3.16.7-29-desktop, openSUSE 13.2, KDE 4.14.9

  2. #2
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    Default Re: Ktorrent slow and slowing down internet access

    On Mon, 05 Sep 2011 17:26:03 +0000, 2fry wrote:

    > When I am running Ktorrent it takes about 30 seconds for a web page to
    > open, in stead of 1 or 2 seconds. The download speed is very slow 200B/s
    > and the status of most of the torrents is "Stalled". If have opened TCP
    > and UDP ports 36477 4444 6881, 7881, 8881 and added them to the port
    > forwarding list in my router. No difference. Any body know what I am
    > missing.


    Your ISP may be throttling your connection.

    Jim



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  3. #3
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    Default Re: Ktorrent slow and slowing down internet access

    If the ports are blocked ktorrent will show a yellow warning triangle in the status bar, else it will show "DTH: XXX nodes, YYY tasks".

    Your ISP may be throttling you, but I doubt it would throttle you that much. Search the internet for complaints against your ISP, you may get your answer there.

    Also take a look at ktorrent's network configuration, specially the upload speed limit and max connection configs, these usually can impact heavily on your and other users download speeds in the same LAN.

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    Default Re: Ktorrent slow and slowing down internet access

    Quote Originally Posted by 2fry View Post
    When I am running Ktorrent it takes about 30 seconds for a web page to open, in stead of 1 or 2 seconds. The download speed is very slow 200B/s and the status of most of the torrents is "Stalled". If have opened TCP and UDP ports 36477 4444 6881, 7881, 8881 and added them to the port forwarding list in my router. No difference. Any body know what I am missing.
    Did you open those ports in the SUSE firewall?
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  5. #5
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    Default Re: Ktorrent slow and slowing down internet access

    It's not unusual for a torrent to affect other connections. Reasons include:

    Hogging the upload channel, particularly for ADSL. This affects requests for links on a web page, e.g. images, JavaScript.
    Running the NAT firewall (usually in the router) out of connection tracking slots

    You might want to see what options the torrent software give you to limit bandwidth use (in each direction).

  6. #6
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    Default Re: Ktorrent slow and slowing down internet access

    Yes, ports are open in the firewall. Sorry about the lack of clarity.
    ASUS F2A85-M, AMD A10 4.1Ghz 4 Core, 8GB RAM, 250GB SSD Samsung 850, Radeon HD 6970, Open GL 2.1, Kernel 3.16.7-29-desktop, openSUSE 13.2, KDE 4.14.9

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    Default Re: Ktorrent slow and slowing down internet access

    As has been said, it's normal that you would experience a slow down of other traffic when a torrent application is running, particularly if it is uploading or downloaded at a unlimited setting. Tweak the upload and download settings so they are a little under your max. I have always found azureus less aggressive in this regard.

    FYI: Download speeds are subjective. You should report only on torrents you know are well supplied, such as:
    http://download.documentfoundation.o...tar.gz.torrent
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  8. #8

    Default Re: Ktorrent slow and slowing down internet access

    Have you tried disabling DHT and/or using protocol encryption?

  9. #9
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    Default Re: Ktorrent slow and slowing down internet access

    Quote Originally Posted by dimesio View Post
    Have you tried disabling DHT and/or using protocol encryption?
    Disabling DHT is a good idea although I doubt it's the source of the problem. Protocol encryption should be disabled by default in Ktorrent but it won't hurt to try

    Anyway IMHO the most probable cause of problems is that Ktorrent eats up all your bandwidth, that's why the pages are slowed down. As already suggested limit your upload and download speeds in Ktorrent or download what You need at night and stop all the already downloaded torrent so they won't be uploading any more.

    Best regards,
    Greg
    Best regards,
    Greg

  10. #10

    Default Re: Ktorrent slow and slowing down internet access

    The router could have a small Nat table, I know this happens with the fios router, source of many complaints.
    The router should have some way of showing this info.

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