Total number of objects in the database

This is an approximate number of objects in the system.

Number of objects in the cache

This is the number of objects in memory. Some of these objects may be inactive, meaning that their state is not in memory.

Target size

This parameter sets a target for the cache manager. If the number of objects in the cache is less than this target, then no attempt is made to remove objects from the cache. When the number of objects in the cache exceeds this target, then objects are scanned periodically to see if they should be deactivated or deallocated.

Mean time since last access

For the objects that are scanned when trying to reduce the cache size to the target, this is the time that has passed since the object was last accessed.

Target maximum time between accesses

When scanning objects to reduce the cache size, objects that haven't been accessed in a span of time that exceeds this amount are deactivated.

Deactivation rate

This is the rate at which objects are deactivated.

Deallocation rate

This is the rate at which objects are removed from the cache and memory.

Time of last cache garbage collection

This is the most recent time that objects were scanned in an attempt to remove objects from the cache.