# Increase system IP port limits to allow for more connections
# default: 32768 61000
net.ipv4.ip_local_port_range = 2000 65000
# default: 1
net.ipv4.tcp_window_scaling = 1
 
# number of packets to keep in backlog before the kernel starts dropping them 
# default: 128
net.ipv4.tcp_max_syn_backlog = 3240000
 
# increase socket listen backlog
# default: 128
net.core.somaxconn = 65535
# default: 4096
net.ipv4.tcp_max_tw_buckets = 1440000
 
# Increase TCP buffer sizes
# default: 212992
net.core.rmem_default = 8388608
# default: 212992
net.core.rmem_max = 16777216
# default: 212992
net.core.wmem_max = 16777216
# default: 4096	87380	6291456
net.ipv4.tcp_rmem = 4096 87380 16777216
# default: 4096	16384	4194304
net.ipv4.tcp_wmem = 4096 65536 16777216
# default: cubic
net.ipv4.tcp_congestion_control = cubic