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Ubuntu Debian 内核调优配置

发表 2015-12-27 00:24 阅读(2573) 评论(1) 赞(0)

服务器默认安装的 Ubuntu 和 Debian,内核是没有经过优化的,要想压榨服务器极限的性能,对内核调整起到关键的作用,废话少说,以下是做法:


打开内核配置文件 sysctl.conf

nano /etc/sysctl.conf

末尾增加以下配置参数:

net.ipv4.ip_forward = 0
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 0
kernel.core_uses_pid = 1
net.ipv4.tcp_syncookies = 1
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.shmmax = 68719476736
kernel.shmall = 4294967296
net.ipv4.tcp_max_tw_buckets = 6000
net.ipv4.tcp_sack = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_rmem = 4096 87380 4194304
net.ipv4.tcp_wmem = 4096 16384 4194304
net.core.wmem_default = 8388608
net.core.rmem_default = 8388608
net.core.rmem_max = 16777216
net.core.wmem_max = 16777216
net.core.netdev_max_backlog = 262144
net.core.somaxconn = 65536
net.ipv4.tcp_max_orphans = 3276800
net.ipv4.tcp_max_syn_backlog = 262144
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_synack_retries = 1
net.ipv4.tcp_syn_retries = 1
net.ipv4.tcp_tw_recycle = 1
net.ipv4.tcp_tw_reuse = 1
net.ipv4.tcp_mem = 94500000 915000000 927000000
net.ipv4.tcp_fin_timeout = 20
net.ipv4.tcp_keepalive_time = 30
net.ipv4.ip_local_port_range = 1024 65000

最后执行以下指令,使之生效:

sysctl -p


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1 条网友评论

1 楼: 潘军杰(博主) 发表于 2015-12-27 12:03:26   回复 TA

阿里云的 ECS 倒是已经优化好了,当时故意查看了一下,它的模板优化有些差别,和上文不尽相同!
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