Mac 使用ab命令进行压测
  1.在Mac中配置Apache
  ①启动Apache,打开终端
sudo apachectl -v
  如下显示Apache的版本

  sudo apachectl start
  这样Apache启动了。打开Safari浏览器地址栏输入 “http://localhost”,可以看到内容为“It works!”的页面

  ②设置虚拟端终机
  打开Apache的配置文件
 sudo vi /etc/apache2/httpd.conf
  在httpd.conf中找到“#Include /private/etc/apache2/extra/httpd-vhosts.conf”,去掉前面的“#”,保存并退出,去掉这一行的#意思是从/extra/httpd-vhosts.conf这个文件导入虚拟主机配置。
  #Include /private/etc/apache2/extra/httpd-vhosts.conf
  然后重启Apache
 sudo apachectl restart
  运行如下命令:
sudo vi /etc/apache2/extra/httpd-vhosts.conf
  打开了配置虚拟主机文件httpd-vhost.conf,配置虚拟主机了。需要注意的是该文件默认开启了两个作为例子的虚拟主机:
  <VirtualHost *:80>
      ServerAdmin webmaster@dummy-host.example.com
      DocumentRoot "/usr/docs/dummy-host.example.com"
      ServerName dummy-host.example.com
      ErrorLog "/private/var/log/apache2/dummy-host.example.com-error_log"
      CustomLog "/private/var/log/apache2/dummy-host.example.com-access_log" common
  </VirtualHost>
  <VirtualHost *:80>
      ServerAdmin webmaster@dummy-host2.example.com
      DocumentRoot "/usr/docs/dummy-host2.example.com"
      ServerName dummy-host2.example.com
      ErrorLog "/private/var/log/apache2/dummy-host2.example.com-error_log"
      CustomLog "/private/var/log/apache2/dummy-host2.example.com-access_log" common
  </VirtualHost>
  需要增加如下配置:
 <VirtualHost *:80>
      DocumentRoot "/Library/WebServer/Documents"
      ServerName localhost
      ErrorLog "/private/var/log/apache2/localhost-error_log"
      CustomLog "/private/var/log/apache2/localhost-access_log" common
  </VirtualHost>
  <VirtualHost *:80>
      DocumentRoot "/Users/snandy/work"
      ServerName mysites
      ErrorLog "/private/var/log/apache2/sites-error_log"
      CustomLog "/private/var/log/apache2/sites-access_log" common
  <Directory />
              Options Indexes FollowSymLinks MultiViews
              AllowOverride None
              Order deny,allow
              Allow from all
    </Directory>
  </VirtualHost>
  保存并退出
  :wq