“Utilization” reports the percentage of searches using this cache as a percentage of searches across all caches.You can compare this value for each cache to determine if there are caches that are over- or under-utilized. If you decide that a cache is not well utilized, you can:
Change the cache bindings to balance utilization. For more information, see “Caches and object bindings” on page 174 in Performance and Tuning: Basics.
Resize the cache to correspond more appropriately to its utilization.
For more information, see the System Administration Guide.