This gauge counts how many times the currently sampled CPU-load and memory-usage statistics for the fabric-interconnect switch's onboard OS has been refreshed with a new sample. An administrator verifying that statistics collection is still running actively watches this update counter increment on successive polls of the same SystemStats object. For example, an update counter that stops incrementing while the switch is otherwise reachable would tell an operator that statistics collection itself has stalled, separate from any load or memory problem.