nginx性能优化

1.worker_processes n;

　　nginx 进程数，一般为cpu的倍数

2.worker_cpu_affinity 00000001 00000010 ..

　　为每个进程分配cpu，可多写几个，也可将一个进程分配到多个cpu

3. worker_rlimit_nofile 65535;

　　nginx进程打开的最多文件描述符数目，查看linux系统文件描述符的方法　　

[root@ray ~]# sysctl -a | grep fs.file
fs.file-max = 1599020
fs.file-nr = 10240    0    1599020

4.use epoll

　　使用epoll的I/O模型

5.worker_connections 65535;

　　每个进程序允许的最多连接数，理论上每台服务器的最大连接数为 worker_processes * worker_connections

6.keepalive_timeout 60;

　　keepalive超时时间

7.client_header_buffer_size 4k;

　　客户端请求头部的缓冲区大小，一般设置为系统分页大小的倍数。

[root@ray ~]# getconf PAGESIZE
4096

8.oepn_file_cache max=65535 inactive=60s;

　　为打开文件指定缓存,max值一般和打开文件数以值，inactive 指经过多长时间文件没被请求后删除缓存

9.open_file_cache_valid 80s;

　　多长时间检查一次缓存的有效信息

10.open_file_cache_min_uses 1;

user nginx;
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 4k;
fastcgi_buffers 8 4k;
fastcgi_busy_buffers_size 8k;
fastcgi_temp_file_write_size 8k;
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 xxx.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;
}
}