METHOD AND PROFILING CACHE FOR MANAGEMENT OF VIRTUAL MEMORY

摘要

PROBLEM TO BE SOLVED: To provide a method and a profiling cache for management of virtual memory. SOLUTION: Each entry in the profiling cache includes a page address, a time stamp and a least recently used (LRU) count. The LRU count is updated for each access of the page address and each entry is cast out using the LRU count. A translation look-aside buffer (TLB) includes a first TLB section for storing a plurality of temporarily pinned entries and a second TLB section for storing a plurality of non-pinned entries. Responsive to a TLB interrupt, an entry is loaded in the second TLB section using a first-in first-out algorithm for replacing the non-pinned entries. The first TLB portion is periodically updated utilizing a set of entries in the profiling cache having the oldest time stamps. COPYRIGHT: (C)2004,JPO