You can configure the following setting for Storyboards.
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Max rows returned in a query
Specify the maximum number of rows returned in a query when visualizing data.
Thread pool size for screenshot service
Specify the thread pool size for the screenshots service. The screenshot service is used to generate and update preview images for the storyboard tiles.
The optimal pool size depends on the available CPUs and the system load. On average, you can allocate up to 3 threads for each available CPU of 2.5 GHz.
Example 1: The screenshot service is installed on the same VM with 8 CPUs. You can use 4 CPUs, which means a pool size up is to 12.
Example 2: The screenshot service is installed on a dedicated VM with 8 CPUs. All CPUs can be used, which means a pool size is up to 24.