X-Git-Url: https://feistymeow.org/gitweb/?a=blobdiff_plain;f=examples%2Fos_related%2Fset_tcp_config.sh;fp=examples%2Fos_related%2Fset_tcp_config.sh;h=7fc3d76ec7b619e8e3b6288688f724081f10ccfa;hb=5b2b4473bd46dc412b11d1372704a2d4ef7d0465;hp=0000000000000000000000000000000000000000;hpb=c92f77e3b40629add88be3d1caec279a7937b01a;p=feisty_meow.git diff --git a/examples/os_related/set_tcp_config.sh b/examples/os_related/set_tcp_config.sh new file mode 100644 index 00000000..7fc3d76e --- /dev/null +++ b/examples/os_related/set_tcp_config.sh @@ -0,0 +1,24 @@ +#!/bin/bash + +# this script modifies the linux kernel for maximum tcp buffer size, which can +# improve long-haul transfers over a wan. + +# new maximum buffer size to set. +new_max=4194304 + +echo "net.core.wmem_max=$new_max" >> /etc/sysctl.conf +echo "net.core.rmem_max=$new_max" >> /etc/sysctl.conf + +echo "net.ipv4.tcp_rmem= 10240 87380 $new_max" >> /etc/sysctl.conf +echo "net.ipv4.tcp_wmem= 10240 87380 $new_max" >> /etc/sysctl.conf + +echo "net.ipv4.tcp_window_scaling = 1" >> /etc/sysctl.conf + +echo "net.ipv4.tcp_timestamps = 1" >> /etc/sysctl.conf + +echo "net.ipv4.tcp_sack = 1" >> /etc/sysctl.conf + +echo "net.ipv4.tcp_no_metrics_save = 1" >> /etc/sysctl.conf + +echo "net.core.netdev_max_backlog = 5000" >> /etc/sysctl.conf +