系统调优 的参数解释

net.ipv4.ip_forward = 1

net.ipv4.conf.lo.arp_ignore = 1

net.ipv4.conf.lo.arp_announce = 2

net.ipv4.conf.all.arp_ignore = 1

net.ipv4.conf.all.arp_announce = 2

net.ipv4.tcp_tw_reuse = 1

net.ipv4.tcp_tw_recycle = 1

net.ipv4.tcp_syncookies = 1

net.ipv4.tcp_fin_timeout = 30

net.ipv4.tcp_keepalive_time = 300

net.ipv4.tcp_window_scaling = 0

net.ipv4.tcp_sack = 0

net.ipv4.tcp_timestamps = 0

net.ipv4.icmp_echo_ignore_broadcasts = 1

net.ipv4.icmp_ignore_bogus_error_responses =1

net.ipv4.conf.all.log_martians = 1

net.ipv4.tcp_max_syn_backlog = 4096

net.ipv4.tcp_max_tw_buckets = 1440000

net.ipv4.ip_local_port_range = 1024 65536

net.core.rmem_max = 16777216

net.core.wmem_max = 16777216

net.ipv4.tcp_rmem = 4096 87380 16777216

net.ipv4.tcp_wmem = 4096 65536 16777216

net.ipv4.tcp_keepalive_intvl = 15

net.ipv4.tcp_retries2 = 3

fs.file-max = 655360

net.core.somaxconn = 4096

请各位大虾，把上面的参数给俺解释解释，不确定的请注明！谢谢