CentOS中运行PostgreSQL需要修改的内核参数及配置脚本分享

#limit process to 4096 instead 1024,for we may have 1024+ connections
echo "postgres        soft    nproc           4096" >> /etc/security/lmits.conf
 
#for big query,pg may open more than 1024 files per session
echo "postgres        hard    nofile          65535" >> /etc/security/limits.conf
echo "postgres        soft    nofile          65535" >> /etc/security/limits.conf
 
#default is 10% of memory,to smooth the io peek value,
#set this to tune background process flush buffer more frequently
echo "vm.dirty_background_ratio=0" >> /etc/sysctl.conf
echo "vm.dirty_background_bytes=1024000000" >> /etc/sysctl.conf
 
#make the sysctl.conf setting take effect
sysctl -p
 
#make limit to take effect
/etc/init.d/sshd restart