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Profiling Pages

In the Ocata release of Horizon a new « OpenStack Profiler » panel was introduced. Once it is enabled and all prerequisites are set up, you can see which API calls Horizon actually makes when rendering a specific page. To re-render the page while profiling it, you’ll need to use the « Profile » dropdown menu located in the top right corner of the screen. In order to be able to use « Profile » menu, the following steps need to be completed:

1. Enable the Developer dashboard by copying _9001_developer.py from openstack_dashboard/contrib/developer/enabled/ to openstack_dashboard/local/enabled/.

2. Copy openstack_dashboard/local/local_settings.d/_9030_profiler_settings.py.example to openstack_dashboard/local/local_settings.d/_9030_profiler_settings.py

3. Copy openstack_dashboard/contrib/developer/enabled/_9030_profiler.py to openstack_dashboard/local/enabled/_9030_profiler.py.

4. To support storing profiler data on server-side, MongoDB cluster needs to be installed on your Devstack host (default configuration), see Installing MongoDB. Then, change the bindIp key in /etc/mongod.conf to 0.0.0.0 and invoke sudo service mongod restart.

5. Collect and compress static assets with python manage.py collectstatic -c and python manage.py compress.

6. Restart the web server.

7. The « Profile » drop-down menu should appear in the top-right corner, you are ready to profile your pages!