Collaborative Research. Conquest-2: Improving Energy Efficiency and Performance Through a Disk/RAM Hybrid File System

国家科学基金会分布式系统研究CISE/CNSABSTRACTPROPOSAL编号：0410908/0410896主要研究者：Reiher Peter/Wang An-机构：加州大学、洛杉矶大学和佛罗里达州立大学PROPOSAL标题：协作研究：征服-2：通过磁盘/RAM混合文件系统提高能源效率和性能该项目提高了许多种计算机的能源效率和性能，电脑 笔记本电池耗尽时必须关闭笔记本电脑。 虽然大型服务器不依赖于电池，但其能耗占总成本的很大一部分。 磁盘驱动器对这两种类型的机器都产生了巨大的能源成本，消耗了一些服务器使用的所有能源的77%。 Conquest-2文件系统通过将磁盘替换为廉价的RAM来持久存储许多文件，从而降低了能耗。 早期的Conquest文件系统通过这种技术展示了令人印象深刻的速度改进。 Conquest-2建立在Conquest的基础上，也降低了磁盘功耗。 Conquest-2正在作为一个工作原型建造，以证明它可以减少单个笔记本电脑和大型数据中心的能源需求，同时实现比传统系统更好的速度。 以前保存在磁盘上的文件存储在永久RAM中，通过保持磁盘旋转更少来节省能源。由于RAM本身消耗电力，Conquest-2的研究挑战是以节能的方式使用永久RAM，而不影响系统的速度。 在流行的Web服务器负载下，Conquest-2预计将节省高达77%的服务器功耗，并实现高达96%的文件系统速度提升，这将通过测量原型的实际工作负载来证明。 Conquest-2的源代码将在开源许可证下提供。 Conquest-2将支持许多不同的机器类型和应用程序，包括数据库、Web和其他在线服务器以及笔记本电脑。 Brett D.博士Fleisch Program Director，CISE/CNS May 26，2004..

National Science FoundationDistributed Systems Research CISE/CNSABSTRACTPROPOSAL NUMBER: 0410908/0410896PRINCIPAL INVESTIGATOR: Reiher Peter/Wang An-IINSTITUTION: University of California, Los Angeles and Florida State UniversityPROPOSAL TITLE: Collaborative Research: Conquest-2: Improving Energy Effi-ciency and Performance Through a Disk/RAM Hybrid File SystemThis project improves energy efficiency and performance for many kinds of com-puters. Portables must be shut down when their battery is exhausted. While large servers do not rely on batteries, their energy consumption is a significant fraction of overall cost. Disk drives incur large energy costs for both types of machines, consuming up to 77% of all energy used by some servers. The Conquest-2 file system reduces energy consumption by replacing disks with inexpensive RAM for persistent storage of many files. The earlier Conquest filesystem demonstrated impressive speed improvements through this tech-nique. Conquest-2 builds on Conquest to reduce disk power consumption as well. Conquest-2 is being built as a working prototype to demonstrate that it can reduce the energy demands of both individual laptop machines and huge data centers, while achieving speeds better than traditional systems. Files that were previously kept on disk are stored in persistent RAM, saving energy by keeping the disk spinning much less. Since RAM itself consumes power, a re-search challenge for Conquest-2 is to use the persistent RAM in a power-efficient way without compromising the system's speed. Under popular Web server loads, Conquest-2 is expected to save up to 77% of power on servers and achieve up to a 96% increase in file system speed, to be demonstrated by measuring the prototype with realistic workloads. The source code of Con-quest-2 will be available under an open-source license. Conquest-2 will sup-port many different machine types and applications, including databases, web and other on-line servers, and laptops. Dr. Brett D. FleischProgram Director, CISE/CNSMay 26, 2004..