| 摘要 |
<p>The present invention relates to a prepaging data management method for a computer storage device. In the prepaging data management method for a computer storage device according to the present invention, the full cache is managed in fragment cache units, and the fragment caches are divided upstream and downstream. The said prepaging data management method comprises: a first process involving control in such a way that on the upstream there are the said prepaged block cache and the said cached block cache while on the downstream side there is only the said cached block cache; a second process in which the number (Nu) of fragment caches which there can be on the said upstream side is updated using the differential value of the total of the prepaging hit rate and the cache hit rate; and a third process in which, when the number of the fragment cache comprised upstream is greater than the number (Nu) of the updated fragment caches mentioned hereinabove, the upstream LRU (Least Recently Used) fragment cache is moved downstream in accordance with LRU policy, and the prepaged block cache of the said fragment cache is eliminated from the said full cache.</p> |
