Content Comparison

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1. GUI Profiling

   1. Enable profiling in Checkmk

      Info
      SETUP→ General → Global Settings → USER INTERFACE Don't use 'Enable profiling for all 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

      Code Block
      language bash
      root@cmk-VirtualBox:~# pip install snakeviz root@cmk-VirtualBox:~# pip3 install snakeviz

      
      

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

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

      
      

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

      Code Block
      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*

      
      

      1. By executing 'multisite.profile.py'  you can get runtime statistics about the last processed page

         Code Block

         root@klappanas:/opt/omd/sites/nagnis_master/var/check_mk# ./multisite.profile.py |more Fri Nov 6 13:35:33 2020 /omd/sites/nagnis_master/var/check_mk/multisite.profile 9585 function calls (9480 primitive calls) in 0.007 seconds Ordered by: internal time ncalls tottime percall cumtime percall filename:lineno(function) 1 0.001 0.001 0.002 0.002 /omd/sites/nagnis_master/lib/python/cmk/gui/modules.py:140(_cmk_gui_top_level_modules) 4652 0.000 0.000 0.000 0.000 {method 'startswith' of 'str' objects} ... ... ... ...

         
         

      2. For viewing multisite.profile with snakeviz, move the file to another directory (e.g. /tmp) and change the owner to the owner of your Internet Browser

         Code Block
         language bash
         anastasios@klappanas:/omd/sites/nagnis_master/var/check_mk$ sudo cp multisite.profile /tmp/ anastasios@klappanas:/tmp$ sudo chown anastasios:anastasios multisite.profile

         
         

   5. Now you can use snakeviz for viewing the profiling file

      Info
      Code Block anastasios@klappanas:/tmp$ snakeviz multisite.profile

      
      

   6. Now you can analyze at which point of the request your view needs the most time!
      
      

2. Profiling via cli

   1. tbf

      Code Block
      OMD[at]:~$ cmk |grep profile --profile Enable profiling mode

      
      

3. Network Analyze with the internet browser

   1. Start the Network Monitor

      Info
      Ctrl + Shift + I or For Firefox follow this manual: https://developer.mozilla.org/en-US/docs/Tools/Network_Monitor For Google Chrome follow this manual: https://developer.chrome.com/docs/devtools/network/

      
      

   2. Now reload the slow/ crashing view again and save/export this file as .har. Please submit this file to us

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