By default, CA Business Service Insight consists of a single Current Status engine instance. Having one engine instance means that there is a single engine that performs all dashboard metric calculations. When dashboard performance is low, you can add additional Current Status engine instances to divide the workload. Adding these instances improves performance. When you add additional Current Status engines, the system utilizes more CPUs and computers. Having additional Current Status engines improves performance because you have a higher number of metrics that are calculated simultaneously.
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