linux 内核优化
1、修改ulimit
vi/etc/security/limits.conf 增加 * soft nofile 65535 * hard nofile 65535 * - nofile 65535 修改 linux 内核文件 sysctl -P 报错
error: "net.bridge.bridge-nf-call-ip6tables" is an unknown key
error: "net.bridge.bridge-nf-call-iptables" is an unknown key
error: "net.bridge.bridge-nf-call-arptables" is an unknown key
解决方法如下：
modprobe bridge
lsmod|grep bridge 2、修改内核参数 vi/etc/sysctl.conf 增加 net.ipv4.tcp_fin_timeout = 30 net.ipv4.tcp_keepalive_time = 1200 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 sysctl -p 生效
3、修改hostname vi/etc/hosts 优质内容筛选与推荐>>
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vi/etc/security/limits.conf 增加 * soft nofile 65535 * hard nofile 65535 * - nofile 65535 修改 linux 内核文件 sysctl -P 报错
error: "net.bridge.bridge-nf-call-ip6tables" is an unknown key
error: "net.bridge.bridge-nf-call-iptables" is an unknown key
error: "net.bridge.bridge-nf-call-arptables" is an unknown key
解决方法如下：
modprobe bridge
lsmod|grep bridge 2、修改内核参数 vi/etc/sysctl.conf 增加 net.ipv4.tcp_fin_timeout = 30 net.ipv4.tcp_keepalive_time = 1200 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 sysctl -p 生效
3、修改hostname vi/etc/hosts 优质内容筛选与推荐>>
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5、【STL】算法 — partial_sort