CentOS6.4 内核优化

vi /etc/sysctl.conf

net.ipv4.tcp_syncookies =
net.ipv4.tcp_tw_reuse =
net.ipv4.tcp_tw_recycle =
net.ipv4.ip_local_port_range =
net.ipv4.tcp_max_syn_backlog =
net.ipv4.tcp_max_tw_buckets =
net.ipv4.tcp_max_syn_backlog =
net.core.netdev_max_backlog =
net.core.somaxconn =
net.core.wmem_default =
net.core.rmem_default =
net.core.rmem_max =
net.core.wmem_max =
net.ipv4.tcp_timestamps =
net.ipv4.tcp_synack_retries =
net.ipv4.tcp_syn_retries =
net.ipv4.tcp_mem =
net.ipv4.tcp_max_orphans =
kernel.sysrq =
kernel.core_uses_pid =
kernel.msgmnb =
kernel.msgmax =
kernel.shmmax =
kernel.shmall =
vm.swappiness=
vm.max_map_count=

这些配置来自大侠 抚琴煮酒

让改动配置立即生效

/sbin/sysctl -p

修改limits.conf
vi /etc/security/limits.conf

*        soft   nproc
*        hard   nproc
*        soft   nofile
*        hard   nofile  

修改90-nproc.conf
vi /etc/security/limits.d/90-nproc.conf

*          soft    nproc    

记得重启服务器