About php-fpm7.0 slow query settings and instructions

This article introduces to you the slow query settings and instructions of php-fpm7.0. It has certain reference value. Friends who need it can refer to it. I hope it will be helpful to everyone.

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php-fpm7.0 Slow Query Settings and Instructions

Environment description

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

View the last line of the php-fpm configuration path

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

include=/etc/php/7.0/fpm/pool.d/*.conf

Then we Go there and change www.conf, and check the introduction about slow query

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

Add two lines of configuration

slowlog=/var/log/php7.0/fpm/slow.log
request_slowlog_timeout=1s

Restart fpm, and pay attention to general issues such as directory permissions

service php7.0-fpm reload

View log echo results

[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

Explanation about log

[03-Jan-2018 18:48:53]  [pool www] pid 4931

There is no explanation for this, time process id

script_filename = /usr/share/nginx/ testapp/index.php

Execution script name, php web application For single entry

[0x00007fb626213520] session_start() /usr/share/nginx/ testapp/app/models/user_model.php:11

This third line is more important: it is the top of the stack trace. It indicates which function call of the currently executed method exceeds the threshold, and Specific files and lines of code
The remaining part is the order of calls (from bottom to top, eventually leading to the result of slowdown and timeout)

Other instructions

If you find that the third line is similar to curl_exec(), for example: this is usually due to network io taking up time. If a third party must be requested, then. . Bear with it.

[0x00007fb6262136f0] curl_exec() /usr/share/nginx/

Similarly, if there is mysql_query and the like, it is also caused by sql slow query

Reference link

php-fpm configuration: https://www.php.net/manual/zh/install.fpm.configuration.php

how-to-read-the-php-slow-request-log： https://serverpilot.io/docs/how-to-read-the-php-slow-request-log/

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