varnish linux 内核优化

Edit /etc/sysctl.conf

These are numbers from a highly loaded varnishe serving about 4000-8000 req/s

net.ipv4.ip_local_port_range = 1024 65536net.core.rmem_max=16777216net.core.wmem_max=16777216net.ipv4.tcp_rmem=4096 87380 16777216net.ipv4.tcp_wmem=4096 65536 16777216net.ipv4.tcp_fin_timeout = 3net.ipv4.tcp_tw_recycle = 1net.core.netdev_max_backlog = 30000net.ipv4.tcp_no_metrics_save=1net.core.somaxconn = 262144net.ipv4.tcp_syncookies = 0net.ipv4.tcp_max_orphans = 262144net.ipv4.tcp_max_syn_backlog = 262144net.ipv4.tcp_synack_retries = 2net.ipv4.tcp_syn_retries = 2