专利名称：Database System Providing Methodology
for Extended Memory Support
发明人：Vadiraja Bhatt,Praveen Vegulla,Prasanta
Ghosh,Girish Vaitheeswaran
申请号：US10710381申请日：20040706
公开号：US20050193160A1公开日：20050901
专利附图：
摘要：A database system providing methodology for extended memory support isdescribed. In one embodiment, for example, a method is described for extended memory
support in a database system having a primary cache, the method comprises steps of:creating a secondary cache in memory available to the database system; mapping avirtual address range to at least a portion of the secondary cache; when the primarycache is full, replacing pages from the primary cache using the secondary cache; inresponse to a request for a particular page, searching for the particular page in thesecondary cache if the particular page is not found in the primary cache; if the particularpage is found in the secondary cache, determining a virtual address in the secondarycache where the particular page resides based on the mapping; and swapping theparticular page found in the secondary cache with a page in the primary cache, so as toreplace a page in the primary cache with the particular page from the secondary cache.
申请人：Vadiraja Bhatt,Praveen Vegulla,Prasanta Ghosh,Girish Vaitheeswaran
地址：Pleasanton CA 94566 US,San Jose CA 95131 US,San Ramon CA 94583US,Fremont CA 94555 US
国籍：US,US,US,US
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