High performance tuning of Nginx

High performance tuning of Nginx

## From a post on the ML, apropos this: 
## http://lowlatencyweb.wordpress.com/2012/03/20/500000-requestssec-modern-http-servers-are-fast.
## For sysctl.conf

net.ipv4.tcp_slow_start_after_idle = 0


  echo "2048 64512" > /proc/sys/net/ipv4/ip_local_port_range
  echo "1" > /proc/sys/net/ipv4/tcp_tw_recycle
  echo "1" > /proc/sys/net/ipv4/tcp_tw_reuse
  echo "10" > /proc/sys/net/ipv4/tcp_fin_timeout
  echo "65536" > /proc/sys/net/core/somaxconn
  echo "65536" > /proc/sys/net/ipv4/tcp_max_syn_backlog
  echo "262144" > /proc/sys/net/netfilter/nf_conntrack_max

## Nginx config.
worker_processes     16;

worker_rlimit_nofile 262144;
daemon off;

events {
  use epoll;
  worker_connections 16384;
}

error_log error.log;

pid /dev/null;

http {
  sendfile   on;
  tcp_nopush on;
  keepalive_requests 100;
  open_file_cache max=100;

  gzip            off;
  gzip_min_length 1024;
  access_log off;
  server {
    listen *:8080 backlog=16384;

    location / {
      root   html;
      index  index.html;
    }
  }
}

puma/puma#1449
puma/puma#1405

http://www.tweaked.io/guide/kernel/
https://vpsfix.com/4056/fix-nginx-502-bad-getaway-error-ubuntu/