About - Cache

This dialog displays information about the usage of cache for the current connection. Caching helps to improve performance by storing recently received screen data. A larger cache improves performance, at the expense of using more memory at both the Student and the Tutor.

Cache Size (KB)

Displays the current size of the cache allocated to this connection. This is the smaller of the cache sizes set at the Tutor and the Student.

Items Cached

Incremented by one each time, an item is stored in the cache, but not decremented when an item is deleted to make room for a newer one.

Items Referenced

Incremented by one each time, an item is referenced in the cache.

Bytes Cached (KB)

Incremented (by the size of the item) each time, an item is stored in the cache, but not decremented when an item is deleted to make room for a newer one.

Bytes Referenced (KB)

Incremented by the size of the item each time, one is referenced in the cache.

Hit Rate

This percentage gives some indication of the effectiveness of the current cache. Bigger numbers are better.