CSR---PDOS: Guiding and Validating Operator Behavior in Internet Services

CSR---PDOS：指导和验证互联网服务中的运营商行为

• 批准号: 0509007
• 负责人: Thu Nguyen
• 金额: $ 60万
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-06-15 至 2009-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0509007&HistoricalAwards=false
• 关键词: CSR; PDOS; Guiding; Validating; Operator

Internet services are rapidly becoming an integral part of people's work and leisure all over the world. With such popularity and importance comes the need for 24x7 availability. Yet, recent research suggests that, at best, Internet services are achieving only 99-99.9% availability, implying 8 to 80 hours of downtime per year.This project addresses a major source of unavailability: operator mistakes. Specifically, the PIs seek to reduce the impact of mistakes by guiding and validating operator actions, focusing specifically on cluster-based Internet services. This approach involves three efforts: (1) to explore the nature of operator mistakes and their impact on the performance and availability of Internet services by interviewing and surveying experienced operators, running experiments with volunteer operators, and running several operator contests; (2) to develop operator models that can be used to guide operator actions based on the likelihood of mistakes; and (3) to design and prototype a validation infrastructure that is part of the online system, yet allows operators to check the correctness of their actions before they can impact the live service.The main expected outcome of the project is a demonstration that systems that guide and validate operator actions can significantly reduce the impact of operator mistakes on service availability. Valuable artifacts for other research efforts relating to availability (and manageability) will include: (1) extensive data on operator mistakes and their impact on service performance and availability; (2) models of operator behavior for guiding actions; and (3) a prototype validation infrastructure.

互联网服务正迅速成为世界各地人们工作和休闲中不可或缺的一部分。随着这种普及和重要性，需要24x7可用性。然而，最近的研究表明，互联网服务最多只能达到99-99.9%的可用性，这意味着每年有8到80个小时的停机时间。该项目解决了不可用的主要原因：操作人员的错误。具体来说，pi通过指导和验证运营商的行动来减少错误的影响，特别关注基于集群的互联网服务。该方法包括三个方面的努力：(1)通过采访和调查经验丰富的运营商，与志愿者运营商进行实验，以及举办几次运营商竞赛，探索运营商错误的性质及其对互联网服务性能和可用性的影响；(2)建立操作员模型，根据错误的可能性来指导操作员的行动；(3)设计和原型验证基础设施，该基础设施是在线系统的一部分，但允许运营商在影响现场服务之前检查其操作的正确性。该项目的主要预期结果是，指导和验证操作人员行动的系统可以显着减少操作人员错误对服务可用性的影响。与可用性（和可管理性）相关的其他研究工作的有价值的工件将包括：(1)关于操作员错误及其对服务性能和可用性的影响的大量数据；(2)指导行动的经营者行为模型；(3)原型验证基础设施。