nginx优化

1.nginx 进程数，建议按照cpu核数指定，一般为它的倍数，也可以设置位：auto 自动检测

worker_processes 2;

2.为每个nginx进程分配核，01表示启用第一个CPU内核，10表示启用第二个CPU内核

worker_processes     2;
worker_cpu_affinity 01 10;

#2核CPU,开启4个进程
worker_processes     4;
worker_cpu_affinity 01 10 01 10;

#4核CPU，开户4个进程
worker_processes     4;
worker_cpu_affinity 0001 0010 0100 1000;

3.配置一个nginx进程打开的最多文件数目，此值建议与ulimit -n的值保持一致

worker_rlimit_nofile 102400;

4.use epoll;
5.每个进程允许的最多连接数，理论上每台nginx服务器的最大连接数为worker_processes*worker_connections

worker_connections 102400;

6.keepalive超时时间

keepalive_timeout 60;

7.客户端请求头部的缓冲区大小，这个可以根据你的系统分页大小来设置，一般一个请求的头部大小不会超过1k，不过由于一般系统分页都要大于1k，所以这里设置为分页大小。分页大小可以用命令getconf PAGESIZE取得

client_header_buffer_size 4k;

一个简单的nginx.conf配置

user  www www;
worker_processes 8;
worker_cpu_affinity 00000001 00000010 00000100 00001000 00010000 00100000 01000000;
error_log  /www/log/nginx_error.log  crit;
pid        /usr/local/nginx/nginx.pid;
worker_rlimit_nofile 204800;

events
{
  use epoll;
  worker_connections 204800;
}

http
{
  include       mime.types;
  default_type  application/octet-stream;

  charset  utf-8;

  server_names_hash_bucket_size 128;
  client_header_buffer_size 2k;
  large_client_header_buffers 4 4k;
  client_max_body_size 8m;

  sendfile on;
  tcp_nopush     on;

  keepalive_timeout 60;
  fastcgi_cache_path /usr/local/nginx/fastcgi_cache levels=1:2
  keys_zone=TEST:10m
  inactive=5m;
  fastcgi_connect_timeout 300;
  fastcgi_send_timeout 300;
  fastcgi_read_timeout 300;
  fastcgi_buffer_size 16k;
  fastcgi_buffers 16 16k;
  fastcgi_busy_buffers_size 16k;
  fastcgi_temp_file_write_size 16k;
  fastcgi_cache TEST;
  fastcgi_cache_valid 200 302 1h;
  fastcgi_cache_valid 301 1d;
  fastcgi_cache_valid any 1m;
  fastcgi_cache_min_uses 1;
  fastcgi_cache_use_stale error timeout invalid_header http_500;
  
  open_file_cache max=204800 inactive=20s;
  open_file_cache_min_uses 1;
  open_file_cache_valid 30s;
  


  tcp_nodelay on;
  
  gzip on;
  gzip_min_length  1k;
  gzip_buffers     4 16k;
  gzip_http_version 1.0;
  gzip_comp_level 2;
  gzip_types       text/plain application/x-javascript text/css application/xml;
  gzip_vary on;


  server
  {
    listen       8080;
    server_name  ad.test.com;
    index index.php index.htm;
    root  /www/html/;

    location /status
    {
        stub_status on;
    }

    location ~ .*\.(php|php5)?$
    {
        fastcgi_pass 127.0.0.1:9000;
        fastcgi_index index.php;
        include fcgi.conf;
    }

    location ~ .*\.(gif|jpg|jpeg|png|bmp|swf|js|css)$
    {
      expires      30d;
    }

    log_format  access  '$remote_addr - $remote_user [$time_local] "$request" '
              '$status $body_bytes_sent "$http_referer" '
              '"$http_user_agent" $http_x_forwarded_for';
    access_log  /www/log/access.log  access;
      }
}

参考 https://blog.csdn.net/aoshilang2249/article/details/68940698