计算机工程与科学2024，Vol.46Issue(7)：1167-1174,8.DOI:10.3969/j.issn.1007-130X.2024.07.004
面向高密度闪存的内存页大小探索
Exploration of memory page size for high-density flash memory
摘要
Abstract
In recent years,solid state drives(SSDs)have witnessed rapid development towards high-er bandwidth and larger capacity.To expand SSD capacity,the size of flash memory pages has increased from 4 KB to 16 KB.However,operating systems still issue read/write requests to SSDs with a 4 KB memory page granularity,making it difficult for applications to fully utilize the high bandwidth of SS-Ds.Increasing the size of memory pages to align the granularity of I/O requests issued by the operating system with the SSD's flash memory read/write operations could be a potential solution.This paper delves into the effects of memory page size on system I/O performance and SSD lifetime for the first time,including setting the memory page size to 16 KB,running benchmark tests,and comparing the re-sults with those obtained using 4 KB memory pages.The key findings are as follows:(1)16 KB memo-ry pages exhibit better read performance;(2)the write granularity of applications determines the per-formance of 16 KB memory pages;(3)16 KB memory pages amplify the impact of invalid data within pages on SSD lifetime.关键词
固态硬盘/高密度闪存/内存管理/内存页大小/I/O性能测试分析Key words
solid state drive/high-density flash/memory management/memory page size/I/O per-formance test and analysis分类
信息技术与安全科学引用本文复制引用
俞丁翠,罗龙飞,宋云鹏,李文通,石亮..面向高密度闪存的内存页大小探索[J].计算机工程与科学,2024,46(7):1167-1174,8.基金项目
国家自然科学基金(62141213,62072177) （62141213,62072177）
上海市科学技术项目-启明星计划(22QA1403300) （22QA1403300）
