1. 來自Scaling Erlang的方法html
內核調優:shell
# Increase the ipv4 port range: sysctl -w net.ipv4.ip_local_port_range="1024 65535" # General gigabit tuning: sysctl -w net.core.rmem_max=16777216 sysctl -w net.core.wmem_max=16777216 sysctl -w net.ipv4.tcp_rmem="4096 87380 16777216" sysctl -w net.ipv4.tcp_wmem="4096 65536 16777216" sysctl -w net.ipv4.tcp_syncookies=1 # This gives the kernel more memory for tcp which you need with many (100k+) open socket connections sysctl -w net.ipv4.tcp_mem="50576 64768 98152" sysctl -w net.core.netdev_max_backlog=2500 # This set the tcp max connections sysctl -w net.netfilter.nf_conntrack_max=1233000
設置打開文件的上限bash
ulimit -n 999999
erl命令行參數cookie
Erl presents a long list of command line options, we usually need to use just a few of them (+P to have a higher number of processes, +K to enable kernell poll, -smp to enable SMP support)
2016-03-07:app
tsung文檔中 P73socket
Increase the maximum number of open files and customize TCP settings in /etc/sysctl.conf. For example:tcp
net.ipv4.tcp_tw_reuse = 1 net.ipv4.tcp_tw_recycle = 1 fs.file-max = 65000
待續spa