公开(公告)号：US20160170906A1

公开(公告)日：2016-06-16

申请号：US15051940

申请日：2016-02-24

Applicant: VMware, Inc.

Inventor： Yury BASKAKOV ,  Alexander Thomas GARTHWAITE ,  Rajesh VENKATASUBRAMANIAN ,  Irene ZHANG ,  Seongbeom KIM ,  Nikhil BHATIA ,  Kiran TATI

IPC: G06F12/12 ,  G06F9/455 ,  G06F12/02

CPC classification number: G06F12/121 ,  G06F9/45558 ,  G06F12/023 ,  G06F12/1009 ,  G06F12/1027 ,  G06F2009/45583 ,  G06F2212/1016 ,  G06F2212/1044

Abstract: Memory performance in a computer system that implements large page mapping is improved even when memory is scarce by identifying page sharing opportunities within the large pages at the granularity of small pages and breaking up the large pages so that small pages within the large page can be freed up through page sharing. In addition, the number of small page sharing opportunities within the large pages can be used to estimate the total amount of memory that could be reclaimed through page sharing.