nginx php-fpm启用慢日志slowlog

作者：袖梨 2022-06-30

php-fpm慢日志slowlog设置可以让我们很好的看见哪些php进程速度太慢而导致的网站问题。

可以让我们方便的找到问题的所在。

代码如下

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vi /data1/server/php-cgi/etc/php-fpm.conf

; The log file for slow requests
; Default Value: not set
; Note: slowlog is mandatory if request_slowlog_timeout is set
slowlog = /data1/log/$pool.log.slow

; The timeout for serving a single request after which a PHP backtrace will be
; dumped to the 'slowlog' file. A value of '0s' means 'off'.
; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
; Default Value: 0
request_slowlog_timeout = 1s

必须同时设置request_slowlog_timeout 0s表示关闭，就是slowlog没有用

1s表示超过1秒的处理都会被记录。

看看具体执行慢到多少秒

代码如下

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/data1/server/php-cgi/var/log/php-fpm.log

[19-Apr-2013 12:40:35] WARNING: [pool www] child 29514, script ‘/xx/www/adx/tx/tm.php’ (request: “GET /tx/tm.php”) executing too slow (1.034708 sec), logging

补充一下不同版本php下开启慢日志教程

PHP 5.3.3 之前版本设置如下：

代码如下

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The timeout (in seconds) for serving a single request after which the worker process will be terminated
Should be used when 'max_execution_time' ini option does not stop script execution for some reason
'0s' means 'off'
10s
The timeout (in seconds) for serving of single request after which a php backtrace will be dumped to slow.log file
'0s' means 'off'
1s
The log file for slow requests
logs/slow.log

PHP 5.3.3 之后版本设置如下：

代码如下

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; The timeout for serving a single request after which a PHP backtrace will be
; dumped to the 'slowlog' file. A value of '0s' means 'off'.
; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
; Default Value: 0
request_slowlog_timeout = 1s

; The log file for slow requests
; Default Value: /usr/local/php/log/php-fpm.log.slow
slowlog = /usr/local/php/log/php-fpm.log.slow

; The timeout for serving a single request after which the worker process will
; be killed. This option should be used when the 'max_execution_time' ini option
; does not stop script execution for some reason. A value of '0' means 'off'.
; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
; Default Value: 0
request_terminate_timeout = 10s

注：request_terminate_timeout 将执行时间太长的进程直接终止

request_slowlog_timeout 将执行过慢的文件写入日志

以后即可根据慢执行日志 /usr/local/php/logs/slow.log 来优化程序文件了！