This section provides summary information about cache hits and misses. Use this data to get an overview of how effective cache design is. A high number of cache misses indicates that you should investigate statistics for each cache.
“Total Cache Hits” reports the number of times that a needed page was found in any cache. “% of total” reports the percentage of cache hits as a percentage of the total number of cache searches.
“Total Cache Misses” reports the number of times that a needed page was not found in a cache and had to be read from disk. “% of total” reports the percentage of times that the buffer was not found in the cache as a percentage of all cache searches.
“Total Cache Searches” reports the total number of cache searches, including hits and misses for all caches combined.