inux/Centos内核优化脚本
作者 佚名技术
来源 Linux系统
浏览
发布时间 2012-04-04
| #!/bin/bash #备份原有文档 mv /etc/sysctl.conf /etc/sysctl.conf.`date "%Y-%m-%d_%H-%M-%S"` #导入新参数 echo -e "kernel.sysrq = 0n" "kernel.core_uses_pid = 1n" "kernel.msgmnb = 65536n" "kernel.msgmax = 65536n" "kernel.shmmax = 2147483648n" "kernel.shmall = 1048576n" "net.core.wmem_default = 2097152n" "net.core.wmem_max = 8388608n" "net.core.rmem_default = 2097152n" "net.core.rmem_max = 8388608n" "net.core.netdev_max_backlog = 4096n" "net.core.somaxconn = 51200n" "net.ipv4.conf.default.rp_filter = 1n" "net.ipv4.conf.default.accept_source_route = 0n" "net.ipv4.ip_forward = 0n" "net.ipv4.ip_local_port_range = 2048 65000n" "net.ipv4.tcp_fin_timeout = 15n" "net.ipv4.tcp_keepalive_time = 30n" "net.ipv4.tcp_max_orphans = 3276800n" "net.ipv4.tcp_max_syn_backlog = 32768n" "net.ipv4.tcp_max_tw_buckets = 6000n" "net.ipv4.tcp_mem = 262144 786432 1048576n" "net.ipv4.tcp_rmem_max = 1048576n" "net.ipv4.tcp_wmem_max = 1048576n" "net.ipv4.tcp_rmem = 4096 131072 1048576n" "net.ipv4.tcp_wmem = 4096 131072 1048576n" "net.ipv4.tcp_sack = 1n" "net.ipv4.tcp_syn_retries = 3n" "net.ipv4.tcp_synack_retries = 3n" "net.ipv4.tcp_syncookies = 1n" "net.ipv4.tcp_timestamps = 0n" "net.ipv4.tcp_tw_reuse = 1n" "net.ipv4.tcp_tw_recycle = 1n" "net.ipv4.tcp_window_scaling = 1n" >/etc/sysctl.conf #使新参数生效 sysctl -p 本文出自 “运维年代记” 博客,请务必保留此出处http://samson.blog.51cto.com/1359099/564448 |
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