The core has built-in performance instrumentation for the refresh cycle. See “Performance Instrumentation” on the “Settings” tab of control panel. The wiki will need to be reloaded before it takes effect.
With performance instrumentation switched on, there is additional timing information displayed the browser developer console each time a refresh cycle is triggered. For example:
performance: mainRender: 327.83ms performance: styleRefresh: 9.14ms performance: mainRefresh: 68.10ms
The information above should be interpreted as follows:
As an example, try switching between the sidebar tabs to compare how long they take to render.
A table is displayed with the following information: