公开(公告)号：US11687392B2

公开(公告)日：2023-06-27

申请号：US17534121

申请日：2021-11-23

Applicant: Tsinghua University

Inventor： Jiwu Shu ,  Qing Wang ,  Youyou Lu ,  Zhuo Cheng

IPC: G06F16/23 ,  G06F16/901 ,  G06F11/07 ,  G06F9/30 ,  G06F11/14 ,  G06F12/02

CPC classification number: G06F11/073 ,  G06F9/3009 ,  G06F11/0772 ,  G06F11/1438 ,  G06F12/0238 ,  G06F16/2365 ,  G06F2212/2542 ,  Y10S707/99953

Abstract: A method for constructing a persistent memory index in a non-uniform memory access architecture includes: maintaining partial persistent views in a persistent memory and maintaining a global volatile view in a DRAM; an underlying persistent memory index processing a request in a foreground thread when cold data is accessed; when hot data is accessed, reading a key-value pair for a piece of hot data in the global volatile view in response to a query operation carried in the request, and in response to an insert/update/delete operation carried in the request, updating a local partial persistent view and the global volatile view; and in response to a hotspot migration, a background thread generating new partial persistent views and a new global volatile view, and recycling the partial persistent views and the global volatile view for old hot data into the underlying persistent memory index.