GUI Debbuging

It is possible to profile the rendering process of Multisite pages. This is done using the Python module cProfile. For viewing the profiling data, we use snakeviz.

SnakeViz is a viewer for Python profiling data that runs as a web application in your browser. It is inspired by the wxPython profile viewer RunSnakeRun.

Schritt-für-Schritt-Anleitung

1. Enable profiling in Checkmk

   WATO - CONFIGURATION → Global Settings → USER INTERFACE

   

   Don't use 'Enable profiling by request'. This option will profile a Multisite request randomly and you and at the most of the time it will be the slowest one.

2. Install Python module

   root@cmk-VirtualBox:~# pip install snakeviz

3. Modify the URL to profile by adding '&_profile=1'

   http://localhost/nagnis_master/check_mk/view.py?view_name=allhosts&_profile=1

4. Now two files are created in ~/var/check_mk/

   root@klappanas:/opt/omd/sites/nagnis_master/var/check_mk# ll |grep multisite
   -rw-rw---- 1 nagnis_master nagnis_master 100246 Nov 6 13:35 multisite.profile
   -rwxr-xr-x 1 nagnis_master nagnis_master 155 Nov 6 13:35 multisite.profile.py*

5. Move the file to another directory (e.g. /tmp)

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