This gauge reports the highest amount of cached memory observed during the sampled interval on the fabric-interconnect switch's onboard OS, as recorded in the currently sampled CPU-load and memory-usage statistics for the fabric-interconnect switch's onboard OS. An administrator distinguishing genuine memory pressure from harmless caching behavior on the switch supervisor compares this memCachedMax figure against memAvailable, since cached memory can normally be reclaimed on demand. For example, a large memCachedMax figure alongside healthy memAvailable would tell an operator the switch's memory usage is benign filesystem caching rather than a sign of trouble.