sysctl tuning

Debian7

net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_sack = 1
net.ipv4.tcp_fack = 1
net.core.rmem_max = 134217728
net.core.wmem_max = 134217728
net.ipv4.tcp_rmem = 4096 87380 67108864
net.ipv4.tcp_wmem = 4096 65536 67108864
net.core.netdev_max_backlog = 250000
net.ipv4.tcp_mtu_probing=1


net.ipv4.conf.all.rp_filter = 0
net.ipv4.conf.all.arp_filter = 1
net.ipv4.conf.eth0.arp_filter = 1
net.ipv4.conf.eth1.arp_filter = 1
fs.file-max = 65535
net.ipv4.ip_local_port_range = 1024 65000
net.ipv4.tcp_sack = 1
net.ipv4.tcp_fack = 1
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_mtu_probing = 1
net.ipv4.tcp_rmem = 4096 87380 67108864
net.ipv4.tcp_wmem = 4096 65536 67108864
net.ipv4.tcp_mem = 10000000 10000000 10000000
net.core.rmem_max = 134217728
net.core.wmem_max = 134217728
net.core.rmem_default = 524287
net.core.wmem_default = 524287
net.core.optmem_max = 524287
net.core.netdev_max_backlog = 300000
net.ipv4.tcp_congestion_control = htcp
net.ipv4.route.flush = 1
net.ipv4.tcp_tw_reuse = 0
net.ipv4.tcp_slow_start_after_idle = 0
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.all.accept_source_route = 0
net.ipv6.conf.all.disable_ipv6 = 1