In what scenario might you increase the number of backgrounders on a dedicated node?

Increasing the number of backgrounders on a dedicated node is appropriate when CPU usage is very high. Backgrounders in Tableau Server are responsible for tasks such as refreshing extracts, running subscription emails, and handling background tasks. When the CPU usage is high, it indicates that the current number of backgrounders is not sufficient to handle the workload efficiently. By increasing the number of backgrounders, you can distribute the processing load more evenly, which helps reduce the overall CPU utilization and improves the performance of background tasks. This allows for tasks to be completed more quickly and ensures that users experience timely data updates and report generation.

The other options do not justify the need to increase backgrounders in the same way. For instance, low CPU usage would generally suggest that the current setup is adequate, while performing a system update is unrelated to backgrounder capacity. Additionally, while adding new users might increase task load, it is not a direct reason to increase backgrounders unless it results in observable high CPU loads.