#! /bin/sh
# source: comp.sys.sun.admin, mr. swiger
# 2-bart# cat /etc/init.d/tune

# Network tuning for web servers
/usr/sbin/ndd -set /dev/ip ip_path_mtu_discovery 1
/usr/sbin/ndd -set /dev/ip ip_respond_to_echo_broadcast 0
/usr/sbin/ndd -set /dev/ip ip_icmp_err_interval 50
/usr/sbin/ndd -set /dev/tcp tcp_recv_hiwat 32768
/usr/sbin/ndd -set /dev/tcp tcp_xmit_hiwat 32768
/usr/sbin/ndd -set /dev/tcp tcp_conn_req_max_q 512
/usr/sbin/ndd -set /dev/tcp tcp_conn_req_max_q0 1024
/usr/sbin/ndd -set /dev/tcp tcp_slow_start_initial 2
/usr/sbin/ndd -set /dev/tcp tcp_deferred_ack_interval 300
/usr/sbin/ndd -set /dev/tcp tcp_time_wait_interval 3000
/usr/sbin/ndd -set /dev/tcp tcp_ip_abort_cinterval 10000

# Note that the last two have been tuned significantly from default, and
# are intended to quickly drop old client connections.  This was used on
# a children's TV website with 56K dialups as the primary connection,
# which had a 1:2 ratio of tcpOutDataBytes:tcp:RetransBytes, and helped
# reduce that problem significantly.