Describe linux/sysctl.conf limits.conf here.

vi /etc/security/limits.conf {{{ soft nproc 2047 hard nproc 16384 soft nofile 65536 hard nofile 65536 soft memlock unlimited hard memlock unlimited }}}

vi /etc/sysctl.conf {{{ kernel.shmmni = 4096 kernel.sem = 250 32000 100 128 fs.file-max = 6815744 net.ipv4.ip_local_port_range = 9000 65500 net.core.rmem_default = 262144 net.core.wmem_default = 262144 net.core.rmem_max = 4194304 net.core.wmem_max = 1048576 fs.aio-max-nr = 1048576

net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_tw_recycle = 1 net.ipv4.tcp_fin_timeout = 30 net.ipv4.tcp_syncookies = 1 }}}