linux优化

 1 #!/bin/bash
 2 echo "* soft nofile 1048576" >> /etc/security/limits.conf
 3 echo "* hard nofile 1048576" >>  /etc/security/limits.conf
 4 
 5 echo "fs.file-max = 1048576" >> /etc/sysctl.conf
 6 
 7 echo "net.ipv4.ip_local_port_range = 1024 65535" >> /etc/sysctl.conf
 8 echo "net.ipv4.tcp_mem = 786432 2097152 3145728" >> /etc/sysctl.conf
 9 echo "net.ipv4.tcp_rmem = 4096 4096 16777216" >> /etc/sysctl.conf
10 echo "net.ipv4.tcp_wmem = 4096 4096 16777216" >> /etc/sysctl.conf
11 
12 echo "net.ipv4.tcp_tw_recycle = 1" >> /etc/sysctl.conf
13 echo "net.core.somaxconn = 262144" >> /etc/sysctl.conf
14 echo "net.ipv4.tcp_max_syn_backlog = 8192" >> /etc/sysctl.conf
15 echo "net.core.netdev_max_backlog = 65536" >> /etc/sysctl.conf
16 
17 echo "net.ipv4.tcp_keepalive_time = 1800" >> /etc/sysctl.conf
18 echo "net.ipv4.tcp_keepalive_probes = 3" >> /etc/sysctl.conf
19 echo "net.ipv4.tcp_keepalive_intvl = 15" >> /etc/sysctl.conf
20 
21 sysctl -p