This counter tallies the number of cache resources — files and directories — that have been evicted from the CIFS AO cache since it was started, with discontinuities marked by cwoAoStatsLastResetTime. An administrator can use rising eviction counts as a signal that the cache is undersized for the current workload and is repeatedly discarding data that might be needed again. For example, a sudden increase in evictions after a large file transfer would indicate that transfer displaced a significant amount of previously cached data.