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Ubuntu Unleashed: Howto: Tweak your Internet connection and maximize your bandwidth in Ubuntu/Linux via sysctl!

  • Here I will unleash a few hidden settings that should improve your internet speed, and work with all current linux operating systems including Ubuntu:
    first open a Terminal via Applications->Accessories->Terminal
    Type:
    sudo gedit /etc/sysctl.conf
    Then Paste the Following at the end of the file:
    # increase TCP max buffer size setable using setsockopt()
    net.core.rmem_max = 16777216
    net.core.wmem_max = 16777216
    # increase Linux autotuning TCP buffer limits
    # min, default, and max number of bytes to use
    # set max to at least 4MB, or higher if you use very high BDP paths
    net.ipv4.tcp_rmem = 4096 87380 16777216
    net.ipv4.tcp_wmem = 4096 65536 16777216
    # don't cache ssthresh from previous connection
    net.ipv4.tcp_no_metrics_save = 1
    net.ipv4.tcp_moderate_rcvbuf = 1
    # recommended to increase this for 1000 BT or higher
    net.core.netdev_max_backlog = 2500
    # for 10 GigE, use this, uncomment below
    # net.core.netdev_max_backlog = 30000
    # Turn off timestamps if you're on a gigabit or very busy network
    # Having it off is one less thing the IP stack needs to work on
    #net.ipv4.tcp_timestamps = 0
    # disable tcp selective acknowledgements.
    net.ipv4.tcp_sack = 0
    #enable window scaling
    net.ipv4.tcp_window_scaling = 1
    Press Ctrl-S To save then alt-F4 to exit and then type:
    sudo sysctl -p
    to apply the settings.

    Hitup a speed test site or a very healthy torrent and see how your speed is:
    Test your Internet connection speed at Speedtest.net
    You can disable all these settings by removing these lines you added via:
    sudo gedit /etc/sysctl.conf

Backubuntu | Ask Metafilter

  • What's the best backup solution for (Ubuntu) Linux? I need a backup as complete as possible of a home directory of ~10+ GB, nightly, etc. I have two large external USB 2.0 drives for the purpose...
11 Feb 08

ATI 8.1 Drivers -- Post Your results - Page 8 - Ubuntu Forums



  • The good news? Changing post video to false in /etc/default/acpi-support makes suspend work without any problems--FINALLY. These other problems are terribly annoying, however, and I hope a fix is found.

  • <!-- / icon and title -->


    <!-- message -->
    "/usr/sbin/update-rc.d -f atieventsd remove"

    helped for me!

    System: gutsy Kernel:2.6.22-14 Hardware: ibm: t60

    Now suspend, hibernate and alt-crtl-backspace works. Cool.

    The only problem is, that sometimes I get an error with some applet panel, like the trash appelt.

    Thanks!
11 Dec 07

Open Office.org Conflicts with Compiz - Ubuntu Forums

  • I've already post the solution for this issue.

    Please don't be irritate but use the Search button instead



    Anyway:



    open compizconfig setting manager

    enable the plugin Workarounds

    disable the "Legacy Fullscreen Support" in Workarounds option



    Enjoy OO with compiz.
14 Nov 07

Download: Get Miro

  • To install the latest version of Miro on Ubuntu Gutsy, you need to add the following repository to your apt sources list:



    deb http://ftp.osuosl.org/pub/pculture.org/miro/linux/repositories/ubuntu gutsy/

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