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This module provides access to information of timer usage for nginx/tengine.

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ngx_debug_timer

This module provides access to information of timer usage for nginx/tengine.

Example

Get information of timer usage.

 http {
    server {
        listen 80;

        location = /debug_timer {
            debug_timer;
        }
    }
 }

Requesting URI /debug_timer, you will get information of timer usage for nginx/tengine. The output page may look like as follows:

$ curl 'localhost:80/debug_timer'
pid:80490
timer:2
--------- [0] --------
timers[i]: 00007F837D02C4B8
    timer: 148
       ev: 00007F837D02C488
     data: 00007F837D02C450
  handler: 000000010778B450
   action:
--------- [1] --------
timers[i]: 00007F837D02C698
    timer: 1263
       ev: 00007F837D02C668
     data: 00007F837D02C630
  handler: 000000010778B450
   action:

Get information of timer usage

Data

Every block like "[0]" except the related timer usage as follows:

  • timers: address of current timer
  • timer: timeout of current timer
  • ev: related event of current timer
  • data: related event data of current timer
  • handler: related event handler of current timer, use addr2line to find the real function
  • action: log action of current timer

Nginx Compatibility

The latest module is compatible with the following versions of nginx:

  • 1.13.4 (stable version of 1.13.x) and later

Tengine Compatibility

  • 2.1.1 (stable version of 2.1.x) and later

Install

Install this module from source:

$ wget http://nginx.org/download/nginx-1.13.4.tar.gz
$ tar -xzvf nginx-1.13.4.tar.gz
$ cd nginx-1.13.4/
$ ./configure --add-module=/path/to/ngx_debug_timer
$ make -j4 && make install

Directive

Syntax: debug_timer

Default: none

Context: server, location

The information of nginx timer usage will be accessible from the surrounding location.

Exception

About

This module provides access to information of timer usage for nginx/tengine.

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