nginx+c+cgi开发

http://blog.csdn.net/marising/article/details/3932938

1.Nginx

1.1.安装

Nginx 的中文维基 http://wiki.codemongers.com/NginxChs下载 Nginx 0.6.26（开发版）（请下载最新版本）
tar zxvf nginx-0.6.26.tar.gz
./configure，注意了类似checking for *** ... not found项，可能是依赖包没有，则需要安装依赖包
缺少PCRE，sudo apt-get install pcre安装。或者去：http://www.pcre.org/
如果缺少OpenSSL，sudo apt-get install libssl-dev，或者去：http://www.openssl.org
如果缺少zlib，可以apt-get install zlib1g，或者http://www.zlib.net/
配置请参考：http://wiki.codemongers.com/NginxChsInstall可以选择安装模块
make & make install
默认安装在/usr/local/nginx下

1.2.管理

执行选项
-c </path/to/config> 为 Nginx 指定一个配置文件，来代替缺省的。
-t 不运行，而仅仅测试配置文件。nginx 将检查配置文件的语法的正确性，并尝试打开配置文件中所引用到的文件。
-v 显示 nginx 的版本。
-V 显示 nginx 的版本，编译器版本和配置参数。

检查配置文件

$ sudo nginx -t

2008/03/12 19:15:11 info 12384#0: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok

2008/03/12 19:15:11 info 12384#0: the configuration file /usr/local/nginx/conf/nginx.conf was tested successfully

启动

/usr/local/nginx/sbin/nginx -c /usr/local/nginx/conf/nginx.conf

查看nginx主进程号

$ ps -ef | grep "nginx: master process"

 | grep -v "grep"

 | awk -F ' ' '{print $2}

26010

重新加载配置文件

$sudo kill -HUP 26010

通过系统的信号控制 Nginx
可以使用信号系统来控制主进程。默认，nginx 将其主进程的 pid 写入到 /usr/local/nginx/logs/nginx.pid 文件中。通过传递参数给 ./configure 或使用 pid 指令，来改变该文件的位置。
主进程可以处理以下的信号：

命令	说明	备注
TERM, INT	快速关闭
QUIT	从容关闭
HUP	重载配置	用新的配置开始新的工作进程从容关闭旧的工作进程
USR1	重新打开日志文件
USR2	平滑升级可执行程序
WINCH	从容关闭工作进程

默认目录
主目录：/usr/local/nginx/
配置目录：/usr/local/nginx/conf/
root目录：/usr/local/nginx/html/
可执行文件路径：/usr/local/nginx/sbin/

2.FastCGI

2.1.安装lighttpd的spawn-fastcgi

下载http://www.lighttpd.net/download/lighttpd-1.4.19.tar.gz

./configure

    make

    cp ./src/spawn-fcgi /usr/local/nginx/sbin/

2.2.安装fastcgi库

下载http://www.fastcgi.com/dist/fcgi.tar.gz

./configure

    make

    make install

2.3.Hello world

#include <iostream>

#include <fcgi_stdio.h>

using namespace std;

int main()

{

    /* Initialization Code */
    int count = 0;

    /* Start of response loop */
    while (FCGI_Accept() >= 0)
    {
        //* body of response loop /*/
        printf("Content-type: text/html/r/n"

               "/r/n"

                ""
                "FastCGI Hello/! (C, fcgi_stdio library)"

                "Request number %d running on host %s "

                "Process ID: %d/n",

                /++count,

                getenv("SERVER_NAME"), getpid());

    }

    /* End of response loop */

    return 0;

}

编译后为FastCGISameple

2.4.启动Spawn-cgi

/usr/local/nginx/sbin/spawn-fcgi -a 127.0.0.1 -p 9000 -C 25 -u www -f /usr/local/nginx/fcgi/FactCGISample

2.5.修改Nginx配置文件

vi /usr/local/nginx/conf/nginx.conf

location ~ /.cgi$

{    
      fastcgi_pass 127.0.0.1:9000; 
      fastcgi_index index.cgi;
      fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
      include fastcgi_params;
}

别忘了，重新加载配置文件

$sudo kill -HUP 26010

打开浏览器，输入http://localhost/1.cgi，就显示

FastCGI Hello! (C, fcgi_stdio library)Request number 1 running on host localhost Process

 ID: 25473

3.webbench压力测试工具

下载：http://home.tiscali.cz:8080/~cz210552/distfiles/webbench-1.5.tar.gz

安装：

tar zxvf webbench-1.5.tar.gz

cd webbench-1.5

make && make install

使用：

webbench -c 500 -t 30 http://127.0.0.1/test.jpg

500是并发连接数，30是时间单位是秒

用ab测试的结果，在我的虚拟机上，看起来性能很不错

(Apache Bench是Apache自带的工具包)

ab -n 10000 -c 100 http://127.0.0.1/1.cgi
This is ApacheBench, Version 2.3 <$Revision: 655654 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 127.0.0.1 (be patient)
Completed 1000 requests
Completed 2000 requests
Completed 3000 requests
Completed 4000 requests
Completed 5000 requests
Completed 6000 requests
Completed 7000 requests
Completed 8000 requests
Completed 9000 requests
Completed 10000 requests
Finished 10000 requests

Server Software:        nginx/0.7.38
Server Hostname:        127.0.0.1
Server Port:            80

Document Path: /1.cgi
Document Length: 143 bytes

Concurrency Level:      100
Time taken for tests:   3.982 seconds
Complete requests:      10000
Failed requests:        8399
   (Connect: 0, Receive: 0, Length: 8399, Exceptions: 0)
Write errors:           0
Total transferred:      2658399 bytes
HTML transferred:       1438399 bytes
Requests per second:    2511.06 [#/sec] (mean)
Time per request:       39.824 [ms] (mean)
Time per request:       0.398 [ms] (mean, across all concurrent requests)
Transfer rate:          651.89 [Kbytes/sec] received

Connection Times (ms)
              min mean[+/-sd] median   max
Connect:        0    1   4.6      0      51
Processing:    22   39   6.8     36      93
Waiting:        4   39   6.8     36      93
Total:         24   39   8.2     36      97

Percentage of the requests served within a certain time (ms)
50%     36
66%     39
75%     41
80%     42
90%     48
95%     54
98%     70
99%     84
100%     97 (longest request)

4.Nginx模块

模块列表
http://wiki.codemongers.com/NginxModules

FastCGI模块源码：nginx/src/http/modules/ngx_http_fastcgi_module.c