Nap: A Black-Box Approach to NUMA-Aware Persistent Memory Indexes

被引：0

作者：

Wang, Qing ^{[1
]}

Lu, Youyou ^{[1
]}

Li, Junru ^{[1
]}

Shu, Jiwu ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Comp Sci & Technol, Beijing Natl Res Ctr Informat Sci & Technol BNRis, Beijing, Peoples R China

来源：

PROCEEDINGS OF THE 15TH USENIX SYMPOSIUM ON OPERATING SYSTEMS DESIGN AND IMPLEMENTATION (OSDI '21) | 2021年

基金：

中国国家自然科学基金;

关键词：

PERFORMANCE; TREES;

D O I：

暂无

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

We present NAP, a black-box approach that converts concurrent persistent memory (PM) indexes into NUMA-aware counterparts. Based on the observation that real-world workloads always feature skewed access patterns, NAP introduces a NUMA-aware layer (NAL) on the top of existing concurrent PM indexes, and steers accesses to hot items to this layer. The NAL maintains 1) per-node partial views in PM for serving insert /update/delete operations with failure atomicity and 2) a global view in DRAM for serving lookup operations. The NAL eliminates remote PM accesses to hot items without inducing extra local PM accesses. Moreover, to handle dynamic workloads, Nap adopts a fast NAL switch mechanism. We convert five state-of-the-art PM indexes using NAP. Evaluation on a four-node machine with Optane DC Persistent Memory shows that NAP can improve the throughput by up to 2.3x and 1.56x under write-intensive and read-intensive workloads, respectively.

引用

页码：93 / 111

页数：19