全闪存Ceph的混合优化策略研究  

MIXED OPTIMIZATION STRATEGY OF NVME SSD CEPH

作　　者：李博 颜靖艺 Li Bo;Yan Jingyi(School of Computer Science and Engineering,Guilin University of Aerospace Technology,Guilin 541004,Guangxi,China;Business School,Guilin Institute of Information Technology,Guilin 541004,Guangxi,China)

机构地区：[1]桂林航天工业学院计算机科学与工程学院,广西桂林541004 [2]桂林信息科技学院商学院,广西桂林541004

出　　处：《计算机应用与软件》2024年第6期128-133,共6页Computer Applications and Software

基　　金：桂林航天工业学院校级科研基金项目(XJ20KT20)。

摘　　要：Ceph是一种经典的分布式存储系统,但随着数据量级和实验要求的不断提高,Ceph在读写延迟方面的不足制约了其进一步的发展。随着固态硬盘(Solid State Disk,SSD)等新型存储介质与Ceph的结合,Ceph整体读写性能有了明显的提升。全闪存SSD是一种性能优秀的SSD,基于全闪存SSD的Ceph系统表现也更好。与传统的分布式系统的读写延迟制约于后端存储介质不同,在基于全闪存SSD的情况下,Ceph系统的软件栈也需要优化以匹配硬件读写速度的提升。因此,提出基于全闪存SSD的Ceph存储系统的混合优化策略,针对Ceph的加锁机制、Crush算法等方面进行了优化,实验结果表明性能优化效果大约在2.8%~4.5%之间。Ceph is a classic distributed storage system,but with the continuous improvement of data and experimental requirements,the lack of read-write delay of Ceph restricts its further development.With the combination of Ceph and new storage media,such as solid state disk(SSD),the overall read-write performance of Ceph has been significantly improved.Non-volatile memory express(NVMe)SSD is an excellent SSD,and Ceph system based on NVMe SSD performs better.Different from the traditional distributed system,the read-write delay of NVMe SSD Ceph isn't limited by hardware.This paper considers that in the case of NVMe SSD the software stack of Ceph also needs to be optimized to match the improvement of hardware read-write speed.Therefore,this paper proposes a hybrid optimization strategy for NVMe SSD Ceph:in terms of the locking mechanism of Ceph,Crush algorithm etc.The experimental results show that the improvement effect is about 2.8%~4.5%.

关 键 词：Ceph NVMe SSD Crush算法 BlueStore 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]