CentOS6.4 内核优化
时间:2014-05-12 18:55 来源:linux.it.net.cn 作者:it
vi /etc/sysctl.conf
#直接在配置文件底部加入一下修改即可。
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.ip_local_port_range = 1024 65000
net.ipv4.tcp_max_syn_backlog = 8192
net.ipv4.tcp_max_tw_buckets = 5000
net.ipv4.tcp_max_syn_backlog = 65536
net.core.netdev_max_backlog = 32768
net.core.somaxconn = 32768
net.core.wmem_default = 8388608
net.core.rmem_default = 8388608
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.ipv4.tcp_timestamps = 0
net.ipv4.tcp_synack_retries = 2
net.ipv4.tcp_syn_retries = 2
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_mem = 94500000 915000000 927000000
net.ipv4.tcp_max_orphans = 3276800
让改动配置立即生效
/sbin/sysctl –p修改ulimit
1.vi /etc/security/limits.conf
* soft nproc 65535
* hard nproc 65535
* soft nofile 65535
* hard nofile 65535
2. vi /etc/security/limits.d/90-nproc.conf
* soft nproc 65535
记得重启服务器
关于ulimit的具体描述可以到一下网址查看。
http://www.ibm.com/developerworks/cn/linux/l-cn-ulimit/
(责任编辑：IT)
| vi /etc/sysctl.conf #直接在配置文件底部加入一下修改即可。 net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_tw_recycle = 1 net.ipv4.ip_local_port_range = 1024 65000 net.ipv4.tcp_max_syn_backlog = 8192 net.ipv4.tcp_max_tw_buckets = 5000 net.ipv4.tcp_max_syn_backlog = 65536 net.core.netdev_max_backlog = 32768 net.core.somaxconn = 32768 net.core.wmem_default = 8388608 net.core.rmem_default = 8388608 net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.ipv4.tcp_timestamps = 0 net.ipv4.tcp_synack_retries = 2 net.ipv4.tcp_syn_retries = 2 net.ipv4.tcp_tw_recycle = 1 net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_mem = 94500000 915000000 927000000 net.ipv4.tcp_max_orphans = 3276800 让改动配置立即生效 /sbin/sysctl –p修改ulimit 1.vi /etc/security/limits.conf * soft nproc 65535 * hard nproc 65535 * soft nofile 65535 * hard nofile 65535 2. vi /etc/security/limits.d/90-nproc.conf * soft nproc 65535 记得重启服务器 关于ulimit的具体描述可以到一下网址查看。 http://www.ibm.com/developerworks/cn/linux/l-cn-ulimit/ (责任编辑：IT) |