Render is software engineer speak for the process of drawing something (e.g., a visualization) on a person's screen. If something is taking longer than .1 seconds (100MS) to render, you can view more detailed diagnostics by doing the following:
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Click CTRL-SHIFT+ALT+1 on a PC, or CTRL-SHIFT+OPTION+1 on a Mac.
This causes the render profiler to appear. Then, perform some operation in the document (e.g., apply a filter) and you will see any slower outputs appear in the render profiler. - Perform some operation(s) in the document (e.g., apply a filter) and you will see any slower outputs appear in the render profiler. Once some items have loaded, they will appear in a tree view, where child items are items that were calculated by the item it is under. e.g. a calculation might need to recalculate the value of a variable or some other calculation. There is a description of what was done for each item, as well as times taken. The times taken are color-coded (green is 100-200ms, orange is 200ms-1s, and red is over 1s). The total time indicates the time taken for an item and all of the things that the item calculated.
In the example below, we can see that the chart took 250 milliseconds to compute in total, where 156 of these were to compute the chart itself. Prior to creating the chart, chart.5 needed to be created.
Before chart.5 could be created, PerformanceImportance.5, cola.importance.5, and table.Performance.by.Brand.5 needed to be computed. Each of these things in turn had inputs that needed to be computed.
Note that the times don't all add up to the overall time, this is because:
- Some things were computed in parallel.
- Some things have already been computed and didn't need to be recomputed.
Closing and Clearing the Render Profiler window
- Press Done to close the profiler window (and clear results).
- Press Clear to clear the existing results without closing the window.
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Diagnose Slow Network or Network Problems