CSR: Small: Advancing Operating System Interfaces to Solid-State Storage

CSR：小：推进操作系统与固态存储的接口

• 批准号: 1218485
• 负责人: Michael Swift
• 金额: $ 48.71万
• 依托单位: University of Wisconsin-Madison
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-09-01 至 2017-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1218485&HistoricalAwards=false
• 关键词: CSR; Small; Advancing; Operating; System

Solid-state storage technologies, such as flash, phase-change memoryand memristors promise large-capacity storage at speeds much fasterthan disk. To date, mainstream use of these technologies has been as areplacement for disks, storing a disk-oriented file system. However,solid-state storage is and will remain far more expensive thandisks. Thus, it will often be used as a cache or special-purposestore, and not as the main repository of data.This proposal develops new interfaces to solid-state storage thatleverage its new features, such as access via ordinary memoryinstructions, and its role in large software systems as a middle layerbetween memory and disk. It focuses on two forms of solid-statestorage: flash memory, common in solid-state drives and mobiledevices, and forthcoming storage-class memory, which compared to flashpromises lower latency, better endurance, and access as memory ratherthan as a device.This research addresses important concerns about using solid-statestorage: how best to use the capabilities of these devices to improvespecific applications or use cases, such as caching; how to provideaccess to internal management capabilities of solid-state storagedevices, such as address translation and garbage collection, toapplications; how to remove software layers between an application andstorage to reduce latency; and how to provide reliable storage whileremoving many of the layers that currently provide reliability.

固态存储技术，如闪存、相变存储器和忆阻器，有望以比磁盘快得多的速度实现大容量存储。到目前为止，这些技术的主流用途是作为磁盘的替代品，存储面向磁盘的文件系统。 然而，固态存储现在和将来都比磁盘贵得多。因此，它通常被用作缓存或特殊用途的存储器，而不是作为数据的主要存储库。这一建议开发了新的接口，以利用其新的功能，如通过普通的内存指令访问，以及它在大型软件系统中作为内存和磁盘之间的中间层。它集中于两种形式的固态存储：闪存，常见于固态驱动器和移动设备，以及即将到来的存储级内存，与闪存相比，它承诺更低的延迟，更好的耐久性，作为内存而不是作为设备访问。这项研究解决了使用固态存储的重要问题：如何最好地利用这些设备的功能来改进特定的应用程序或用例，如缓存;如何为应用程序提供对固态存储设备的内部管理功能（如地址转换和垃圾收集）的访问;如何删除应用程序和存储之间的软件层以减少延迟;以及如何在删除当前提供可靠性的许多层的同时提供可靠的存储。