ALLOCATING PHYSICAL PAGES TO SPARSE DATA SETS IN VIRTUAL MEMORY WITHOUT PAGE FAULTING

摘要

A processing system (100) for reduction of a virtual memory page fault rate that includes a first memory (110) to store a dataset, a second memory (150, 210, 305) to store a subset of the dataset, and a processing unit (114). The processing unit (114) is configured to receive a memory access request including a virtual address and determine whether the virtual address is mapped to a first physical page (335) in the first memory and or a second physical page in the second memory. The processing unit maps a third physical page in a free page pool (330) of the second memory to the virtual address in response to the virtual address not being mapped to the second physical page. The processing unit also grants access to the third physical page that is mapped to the virtual address.