环境说明root@ubuntu:/home/tb# cat /etc/issue Ubuntu 16.04.2 LTS \n \l root@ubuntu:/home/tb# php -v PHP 7.0.15-0ubuntu0.16.04.4 (cli) ( NTS ) Copyright (c) 1997-2017 The PHP Group Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies with Zend OPcache v7.0.15-0ubuntu0.16.04.4, Copyright (c) 1999-2017, by Zend Technologies

查看php-fpm配置路径root@ubuntu:/home/tb# ps -ef |grep fpm root 1642 1 0 10:17 ? 00:00:01 php-fpm: master process (/etc/php/7.0/fpm/php-fpm.conf) www-data 3685 1642 0 17:14 ? 00:00:04 php-fpm: pool www www-data 3686 1642 0 17:14 ? 00:00:03 php-fpm: pool www www-data 3808 1642 0 17:43 ? 00:00:03 php-fpm: pool www root 3930 2208 0 18:10 pts/0 00:00:00 grep --color=auto fpm root@ubuntu:/home/tb#

php-fpm.conf的最后一行为include=/etc/php/7.0/fpm/pool.d/*.conf

那我们去那里改www.conf，查看关于慢查询的介绍314 ; The log file for slow requests 315 ; Default Value: not set 316 ; Note: slowlog is mandatory if request_slowlog_timeout is set 317 ;slowlog = log/$pool.log.slow 318 319 ; The timeout for serving a single request after which a PHP backtrace will be 320 ; dumped to the 'slowlog' file. A value of '0s' means 'off'. 321 ; Available units: s(econds)(default), m(inutes), h(ours), or d(ays) 322 ; Default Value: 0 323 ;request_slowlog_timeout = 0

添加两行配置slowlog=/var/log/php7.0/fpm/slow.log request_slowlog_timeout=1s

重启fpm，同时注意目录权限等一般问题service php7.0-fpm reload

查看log回显结果[03-Jan-2018 18:48:53] [pool www] pid 4934 script_filename = /usr/share/nginx/ testapp/index.php [0x00007fb626213520] session_start() /usr/share/nginx/ testapp/app/models/user_model.php:11 [0x00007fb6262134a0] __construct() /usr/share/nginx/ci_2.2.0/core/Loader.php:303 [0x00007fb626213390] model() /usr/share/nginx/ testapp/app/core/my_Controller.php:39 [0x00007fb6262132e0] __construct() /usr/share/nginx/ testapp/app/controllers/home.php:8 [0x00007fb626213270] __construct() /usr/share/nginx/ci_2.2.0/core/CodeIgniter.php:308 [0x00007fb6262130e0] [INCLUDE_OR_EVAL]() /usr/share/nginx/ testapp/index.php:325 [03-Jan-2018 18:48:53] [pool www] pid 4931 script_filename = /usr/share/nginx/ testapp/index.php [0x00007fb626213520] session_start() /usr/share/nginx/ testapp/app/models/user_model.php:11 [0x00007fb6262134a0] __construct() /usr/share/nginx/ci_2.2.0/core/Loader.php:303 [0x00007fb626213390] model() /usr/share/nginx/ testapp/app/core/my_Controller.php:39 [0x00007fb6262132e0] __construct() /usr/share/nginx/ testapp/app/controllers/home.php:8 [0x00007fb626213270] __construct() /usr/share/nginx/ci_2.2.0/core/CodeIgniter.php:308 [0x00007fb6262130e0] [INCLUDE_OR_EVAL]() /usr/share/nginx/ testapp/index.php:325

关于log的说明[03-Jan-2018 18:48:53] [pool www] pid 4931

这个没啥解释，时间进程idscript_filename = /usr/share/nginx/ testapp/index.php

执行脚本名称，php web应用都为单入口[0x00007fb626213520] session_start() /usr/share/nginx/ testapp/app/models/user_model.php:11

这个第三行比较重要：是堆栈顶部信息(is the top of the stack trace)，他说明指出了超出了阈值的当前执行的方法的函数调用是哪个，以及具体的文件及代码行数

剩下的其他部分就是 调用的顺序(从下往上，最终导致变慢超时的结果)

其他说明

如果发现第三行是以类似curl_exec()，比如：这一般是网络io占用了时间，如果是必须请求第三方，那么。。忍吧。[0x00007fb6262136f0] curl_exec() /usr/share/nginx/

同样，如果有mysql_query之类的，也是由于sql 慢查询导致的

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