PHP performance analysis php-fpm slow execution log slow logs

As we all know, MySQL has slow query log, and we can tell that those SQL statements have performance problems based on the slow search logs. As a good partner for MySQL, PHP has the same functionality. If you use PHP-FPM to manage PHP, you can open it with the following options.

The PHP 5.3.3 was previously set as follows:

<value name= "Request_slowlog_timeout" >5s</value>
<value name= "Slowlog" >logs/php-fpm-slowlog.log</value>
The following PHP 5.3.3 are set:
Request_slowlog_timeout = 5s
Slowlog =/usr/local/php/log/php-fpm-slowlog.log

Description

Request_slowlog_timeout is how long a script can be logged to a log file
Slowlog is the path to the log file
Once turned on, if a script executes for more than a specified time, a message similar to the following is written to the specified log file:

[19-dec-2013 16:54:49] [Pool www] pid 18575
Script_filename =/home/admin/web/htdocs/sandbox_canglong/test/tt.php
[0x0000000003a00dc8] curl_exec ()/home/admin/web/htdocs/sandbox_canglong/test/tt.php:2
[0x0000000003a00cd0] Exfilter_curl_get ()/home/admin/web/htdocs/sandbox_canglong/test/tt.php:6

Log Description:

Script_filename is the entry file.

Curl_exec (): Indicates that the execution time is exceeded when the method is executed.
Exfilter_curl_get (): Describes the method for calling Curl_exec () is Exfilter_curl_get ().
The number following the colon of each line is the line number.

When turned on, there are also records in the error log file. As follows:

[19-dec-2013 15:55:37] WARNING: [Pool www] child 18575, script '/home/admin/web/htdocs/sandbox_canglong/test/tt.php ' (Request: "get/test/ tt.php ") Executing too Slow (1.006222 sec), logging
[19-dec-2013 15:55:37] Notice:child 18575 stopped for tracing
[19-dec-2013 15:55:37] Notice:about to trace 18575
[19-dec-2013 15:55:37] notice:finished Trace of 18575