一次Nginx+PHP+Mysql的并发测试经历

 一次Nginx+PHP+Mysql的并发测试经历
  一、硬件环境
      CPU:4核Intel(R) Xeon(R) CPU           E5504  @ 2.00GHz
      6G内存，120G硬盘
  二、软件环境
     Linux centos12 2.6.18-164.6.1.el5 #1 SMP x86_64 GNU/Linux
     nginx-0.7.61.tar.gz
     mysql-5.1.35.tar.gz
     php-5.2.10.tar.gz
     memcache-2.2.5.tgz
     eaccelerator-0.9.5.3.tar.bz2
     ZendOptimizer-3.3.9-linux-glibc23-x86_64.tar.gz
  三、相关软件配置
     1、Nginx配置文件
       user www www;
#worker_processes 1;
#因为我是4核cpu所以设置为4
worker_processes 4;
error_log /web/logs/nginx_error.log crit;
pid /usr/local/nginx/logs/nginx.pid;
#Specifies the value for maximum file descriptors that can be opened by this process.
worker_rlimit_nofile 51200;
events
{
use epoll;
worker_connections 51200;
}
http
{
include mime.types;
default_type application/octet-stream;
#charse gb2312;
server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 64k;
client_max_body_size 8m;
sendfile on;
tcp_nopush on;
keepalive_timeout 60;
tcp_nodelay on;
#增加超时，以避免502错误
fastcgi_connect_timeout 600;
fastcgi_send_timeout 600;
fastcgi_read_timeout 600;
fastcgi_buffer_size 128k;
fastcgi_buffers 8 128k;
fastcgi_busy_buffers_size 256k;
fastcgi_temp_file_write_size 256k;
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;
#limit_zone crawler $binary_remote_addr 10m;
server
{