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Today, I would like to share with you about the Nginx record analysis slow response request and how to replace the website response content configuration of the relevant knowledge points, detailed content, clear logic, I believe that most people still know too much about this knowledge, so share this article for your reference, I hope you can learn something after reading this article, let's take a look at it.

1. Module installation

The installation method of nginx third-party module is skipped here.

Configuration parameters

. / configure-- prefix=/usr/local/nginx-1.4.1-- with-http_stub_status_module\-- add-module=../ngx_http_log_request_speed

two。 Instruction log_request_speed

2.1 log_request_speed_filter

Syntax:

Log_request_speed_filter [on | off]

Configuration segment: nUnix a

Context: location, server, http

Start or disable the module

2.2 log_request_speed_filter_timeout

Syntax:

Log_request_speed_filter_timeout [num sec]

Default: 5 seconds

Configuration segment: location, server, http

This is not a real timeout, but when a request exceeds the time given here, it will be recorded in the nginx error log. The default value is 5000 microseconds (5 seconds). If a request is less than 5 seconds, the request will not be logged, but if it exceeds 5 seconds, the request will be recorded in the error log of nginx.

3. Use an example

3.1 nginx configuration

Http {log_request_speed_filter on; log_request_speed_filter_timeout 3;...}

The slow requests recorded in the error log are as follows

3.2 Log analysis

Cd / usr/local/nginx-1.4.1/logswget http://wiki.nginx.org/images/a/a8/log_analyzer.tar.gztar-xzvf log_analyzer.tar.gzcd request_speed_log_analyzer# cat.. / error.log | grep 'process request' |. / analyzer.pl-rpost / wp-admin/admin-ajax.php http/1.1-avg ms: 1182, value count: 2get / shmb/1145.html http/1.1-avg ms: 2976, value count: 1

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