This gauge reports the average amount of free kernel memory over 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 diagnosing switch instability that resembles kernel-level memory exhaustion checks this kernelMemFreeAvg figure specifically, separately from general application-level memory stats. For example, a kernelMemFreeAvg figure trending steadily downward over many samples would prompt an operator to plan a supervisor reload before kernel memory runs out entirely.