URFS: A User-space Raw File System based on NVMe SSD

被引：0

作者：

Tu, Yaofeng ^{[1
,2
]}

Han, Yinjun ^{[3
]}

Chen, Zhenghua ^{[3
]}

Chen, Zhengguang ^{[3
]}

Chen, Bing ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Coll Comp Sci & Technol, Nanjing, Peoples R China

[2] ZTE Corp, Nanjing, Peoples R China

[3] ZTE Corp, Cent R&D Inst, Nanjing, Peoples R China

来源：

2020 IEEE 26TH INTERNATIONAL CONFERENCE ON PARALLEL AND DISTRIBUTED SYSTEMS (ICPADS) | 2020年

关键词：

NVMe SSD; user-space; file system; Multi-Queue; IO isolation;

D O I：

10.1109/ICPADS51040.2020.00070

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

NVMe (Non-Volatile Memory Express) is a protocol designed specifically for SSD (Solid State Drive), which has significantly improved the performance of SSD storage devices. However, the traditional kernel-space IO path hinders the performance of NVMe SSD devices. In this paper, a userspace raw file system (URFS) based on NVMe SSD is proposed. Through the design of the user-space multi-process shared cache, multiple applications can share access to SSD to reduce the amount of SSD access; NVMe-oriented log -free data layout and Multi -granularity IO queue elastic separation technology are used to improve system performance and throughput. Experiments show that, compared to traditional file systems, URFS performance is improved by more than 23% in CDN (Content Delivery Network) scenarios, and URFS performance is improved more in small file scenarios and read-intensive scenarios.

引用

页码：494 / 501

页数：8

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