技巧：安装linux后的内核调优(1)

技巧：安装linux后的内核调优(1)

安装linux后的内核调优

kernel.shmall = 268435456

net.ipv4.tcp_syncookies = 1

net.ipv4.tcp_tw_reuse = 1

net.ipv4.tcp_tw_recycle = 1

net.ipv4.tcp_fin_timeout = 30

net.ipv4.tcp_keepalive_time = 1200

net.ipv4.ip_local_port_range = 1024 65000

net.ipv4.tcp_max_tw_buckets = 5000

net.ipv4.tcp_max_tw_buckets = 5000

net.ipv4.tcp_fin_timeout = 30

net.ipv4.tcp_keepalive_time = 300

net.ipv4.tcp_syncookies = 1

net.ipv4.tcp_tw_reuse = 1

net.ipv4.tcp_tw_recycle = 1

net.ipv4.ip_local_port_range = 5000 65000

net.ipv4.tcp_mem = 786432 1048576 1572864

net.core.wmem_max = 873200

net.core.rmem_max = 873200

net.ipv4.tcp_wmem = 8192 436600 873200

net.ipv4.tcp_rmem = 32768 436600 873200

net.core.somaxconn = 256

net.core.netdev_max_backlog = 1000

net.ipv4.tcp_max_syn_backlog = 2048

net.ipv4.tcp_retries2 = 5

net.ipv4.tcp_keepalive_time = 500

net.ipv4.tcp_keepalive_intvl = 30

net.ipv4.tcp_keepalive_probes = 3

net.ipv4.conf.lo.arp_ignore = 0

net.ipv4.conf.lo.arp_announce = 0

net.ipv4.conf.all.arp_ignore = 0

net.ipv4.conf.all.arp_announce = 0

几个解释：

net.ipv4.tcp_syncookies = 1