Data cache using dynamic frequency based replacement and boundar

Details Data cache using dynamic frequency based replacement and boundar Data cache using dynamic frequency based replacement and boundar

1989-08-08

1991-08-27

Fleming, Michael R.

Boots, shoes, and leggings

3642434, 36424341, G06F 1212

Patent

active

050438859

ABSTRACT:
A cache directory keeps track of which blocks are in the cache, the number of times each block in the cache has been referenced after aging at least a predetermined amount (reference count), and the age of each block since the last reference to that block, for use in determining which of the cache blocks is replaced when there is a cache miss. At least one preselected age boundary threshold is utilized to determine when to adjust the reference count for a given block on a cache hit and to select a cache block for replacement as a function of reference count value and block age.

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