linkpi_firmware_history/rootfs/etc/sysctl.conf

#vm.min_free_kbytes=20480
#vm.vfs_cache_pressure=200
net.core.wmem_max = 2048000
net.core.rmem_max = 2048000
net.core.wmem_default = 2048000
net.core.rmem_default = 2048000
net.ipv4.udp_mem = 1000000 1500000 2000000
net.ipv4.udp_rmem_min = 1500000
net.ipv4.udp_wmem_min = 1500000

net.ipv4.tcp_wmem = 32768 4336600 873200
net.ipv4.tcp_rmem = 32768 4336600 873200
net.ipv4.tcp_mem = 786432 1048576 1572864

#net.ipv4.ip_forward = 1
#net.ipv4.tcp_tw_recycle = 1
#net.ipv4.tcp_tw_reuse = 1