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Optimize your Internet connection (TCP) and maximize your bandwidth in Linux


Simply modify your sysctl file and poof!

sudo gedit /etc/sysctl.conf

copy and past the following code at the last line on your sysctl 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

tada… now run the following command

sudo sysctl -p

6 Responses to Optimize your Internet connection (TCP) and maximize your bandwidth in Linux

  1. thanx man.. j00 roxx0r!!

  2. Pingback: Perfect Desktop Installation of Ubuntu 8.04 on MSI VR320 & MSI VR320X | Xanda's Blog !~!

  3. Thank you !,

    Was looking for something like this for Linux, and now even though my internet connection is only 1Mb, saw it as eg. Youtube videos load quickly and seamlessly. From Buenos Aires Miguel thank you for sharing your knowledge. 🙂

  4. Debashisa Jena


  5. Good work man, Really windows sucks!

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