早期的脏缓冲器冲洗与SSD的第二次机会
1Department of Electronic Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea.
Micromachines
|July 8, 2023
概括
本研究介绍了使用NAND闪存的固态驱动器 (SSD) 的选择性早期冲洗政策. 它优化了缓冲区管理,以减少NAND写入操作,并改善I/O请求响应时间.
科学领域:
- 计算机科学 计算机科学
- 电气工程 电气工程
- 数据存储技术 数据存储技术
背景情况:
- 高性能服务器应用程序推动了对先进存储解决方案的需求.
- 带有NAND闪存的固态驱动器 (SSD) 正在取代硬盘,因为它们的性能优越.
- 在使用内部内存的SSD中缓冲缓存对于提高性能至关重要.
研究的目的:
- 解决SSD中现有的早期冲洗策略的性能限制.
- 为了减少早期冲洗导致的增加NAND写作操作的负面副作用.
- 为提高SSD性能提出和评估一个选择性的早期冲洗政策.
主要方法:
- 实施选择性早期冲洗政策,评估缓冲区重写可能性.
- 将拟议的政策与现有的早期冲洗方法进行比较,使用混合的痕迹数据.
- 分析对NAND写作操作和I/O请求响应时间的影响.
主要成果:
- 与标准的早期冲洗政策相比,选择性早期冲洗政策减少了高达18.0%的NAND写入操作.
- 拟议的策略在大多数测试的配置中证明了更好的I/O请求响应时间.
- 这种选择性方法有效地减轻了传统的早期冲洗的性能权衡.
结论:
- 选择性早期冲洗政策对SSD缓冲管理的现有方法提供了显著的改进.
- 这种优化对于高性能基于服务器的应用程序至关重要,这些应用程序需要高效的数据存储.
- 进一步的研究可以探索自适应算法,以提高NAND闪存利用效率.
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