定位apache慢请求神器—mod_log_slow

1. 编译安装 mod_log_slow

1) 解压

tar zxf mod_log_slow-1.0.7.tar.gz
cd mod_log_slow

或者可以从github中检出

git clone git://github.com/yokawasa/mod_log_slow.git
cd mod_log_slow

2) 打开Makefile并且修改变量ap_basedir

#vi Makefile
 ap_basedir=/改成你的apache安装路径
# make
# make install

2. 配置apache

2.1 加载模块

LoadModule log_slow_module modules/mod_log_slow.so

2.2 配置虚拟主机

<VirtualHost *:80>
    ServerName localhost
    DocumentRoot /usr/local/apache/htdocs
    ErrorLog logs/error_log

    LogLevel debug
    CustomLog logs/access_log common
    CustomLog logs/transfer_log "%h %l %u %t "%r" %>s %b "%{Referer}i" "%{User-Agent}i" "%{logslow-id}n" "%{logslow-time}n""

    ## (VirtualHost) mod_log_slow configuration
    LogSlowEnabled On
    LogSlowLongRequestTime 100
    LogSlowFileName /usr/local/apache/logs/slow_log
    LogSlowTimeFormat "[%Y-%m-%d %H:%M:%S]"
    LogSlowBufferedLogs Off
</VirtualHost>

3. 重启

service httpd restart