Scale and Performance in a Filesystem Semi-Microkernel

Q3 Computer Science

Operating Systems Review (ACM) Pub Date : 2021-10-26 DOI:10.1145/3477132.3483581

Jing Liu, Anthony Rebello, Yifan Dai, Chenhao Ye, Sudarsun Kannan, A. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau

引用次数: 8

Abstract

We present uFS, a user-level filesystem semi-microkernel. uFS takes advantage of a high-performance storage development kit to realize a fully-functional, crash-consistent, highly-scalable filesystem, with relative developer ease. uFS delivers scalable high performance with a number of novel techniques: careful partitioning of in-memory and on-disk data structures to enable concurrent access without locking, inode migration for balancing load across filesystem threads, and a dynamic scaling algorithm for determining the number of filesystem threads to serve the current workload. Through measurements, we show that uFS has good base performance and excellent scalability; for example, uFS delivers nearly twice the throughput of ext4 for LevelDB on YCSB workloads.

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文件系统半微内核中的规模和性能

我们提出了uFS，一种用户级文件系统半微内核。uFS利用高性能存储开发工具包来实现功能齐全、崩溃一致、高度可扩展的文件系统，开发人员相对容易。uFS通过许多新颖的技术提供了可扩展的高性能:对内存和磁盘数据结构进行仔细分区，以支持不加锁的并发访问;inode迁移，以平衡文件系统线程之间的负载;动态缩放算法，用于确定为当前工作负载服务的文件系统线程的数量。通过测试表明，uFS具有良好的基础性能和良好的可扩展性;例如，在YCSB工作负载上，uFS为LevelDB提供的吞吐量几乎是ext4的两倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Operating Systems Review (ACM) Computer Science-Computer Networks and Communications

CiteScore

2.80

自引率

0.00%

发文量

期刊介绍： Operating Systems Review (OSR) is a publication of the ACM Special Interest Group on Operating Systems (SIGOPS), whose scope of interest includes: computer operating systems and architecture for multiprogramming, multiprocessing, and time sharing; resource management; evaluation and simulation; reliability, integrity, and security of data; communications among computing processors; and computer system modeling and analysis.