ACM SIGOPS Oper. Syst. Rev.最新文献_第2页

Performance Implications of Extended Page Tables on Virtualized x86 Processors 扩展页表在虚拟化x86处理器上的性能影响

ACM SIGOPS Oper. Syst. Rev. Pub Date : 2017-09-11 DOI: 10.1145/3139645.3139652

Timothy Merrifield, H. Taheri

引用次数: 1

Ingens: Huge Page Support for the OS and Hypervisor Ingens:对操作系统和管理程序的巨大页面支持

ACM SIGOPS Oper. Syst. Rev. Pub Date : 2017-09-11 DOI: 10.1145/3139645.3139659

Youngjin Kwon, Hangchen Yu, Simon Peter, C. Rossbach, E. Witchel

引用次数: 10

Exploring Machine Learning for Thread Characterization on Heterogeneous Multiprocessors 探索机器学习在异构多处理器上的线程表征

ACM SIGOPS Oper. Syst. Rev. Pub Date : 2017-09-11 DOI: 10.1145/3139645.3139664

Cha V. Li, V. Petrucci, D. Mossé

引用次数: 5

Revisiting the Paxos Foundations: A Look at Summer Internship Work at VMware Research 重新审视Paxos的基础:回顾VMware Research的暑期实习工作

ACM SIGOPS Oper. Syst. Rev. Pub Date : 2017-09-11 DOI: 10.1145/3139645.3139656

H. Howard, D. Malkhi, A. Spiegelman

{"title":"Revisiting the Paxos Foundations: A Look at Summer Internship Work at VMware Research","authors":"H. Howard, D. Malkhi, A. Spiegelman","doi":"10.1145/3139645.3139656","DOIUrl":"https://doi.org/10.1145/3139645.3139656","url":null,"abstract":"The summer of 2016 was buzzing with intern activity at the VMware Research Group (VRG), working with all the research team and with David Tennenhouse, Chief Research Officer of VMware. In this paper, we give a brief introduction to Flexible Paxos [4], one of the internship results. There were several other exciting outcomes; internships are a great way to participate in driving innovation at VMware! Flexible Paxos introduces a surprising observation concerning the foundations distributed computing. The observation revisits the basic requisites of Paxos [7, 8], Lamport’s widely adopted algorithmic foundation for fault tolerance and replication, and a pinnacle of his Turing award [1]. Since its publication, Paxos has been widely built upon in teaching, research and production systems. Paxos implements a fault tolerant state-machine among a group of nodes. At its core, Paxos uses two phases, each requires agreement from a subset of nodes (known as a quorum) to proceed. Throughout this manuscript, we will refer to the first phase as the leader election phase, and the second as the replication phase. The safety and liveness of Paxos is based on the guarantee that any two quorums will intersect. To satisfy this requirement, quorums are typically composed of any majority from a fixed set of nodes, although other quorum schemes have been proposed. In practice, we usually wish to reach agreement over a sequence of commands, not one. This is often referred to as the Multi-Paxos problem [3]. In Multi-Paxos, we use the leader election phase of Paxos to establish one node as a leader for all future commands, until it is replaced by another leader. We use the replication phase of Paxos to agree on a series of commands, one at a time. To commit a command, the leader must always communicate with at least a quorum of nodes and wait for them to accept the value. In the Flexible Paxos work, we observe that Paxos is conservative:","PeriodicalId":7046,"journal":{"name":"ACM SIGOPS Oper. Syst. Rev.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75493126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Building an Extensible Open vSwitch Datapath 构建可扩展的开放vSwitch数据路径

ACM SIGOPS Oper. Syst. Rev. Pub Date : 2017-09-11 DOI: 10.1145/3139645.3139657

Cheng-Chun Tu, Joe Stringer, J. Pettit

{"title":"Building an Extensible Open vSwitch Datapath","authors":"Cheng-Chun Tu, Joe Stringer, J. Pettit","doi":"10.1145/3139645.3139657","DOIUrl":"https://doi.org/10.1145/3139645.3139657","url":null,"abstract":"The virtual switch is the cornerstone of the today's virtualized data center. As all traffic to and from virtual machines or containers must pass through a vSwitch, it is the ideal location for network configuration and policy enforcement.\u0000 The bulk of Open vSwitch functionality is platform-agnostic and portable. However the datapath, which touches every packet, is unique to each supported platform. Maintaining each datapath requires duplicated effort and the result has been inconsistent support of features across platforms. Even on a single platform, the features supported by a particular kernel version can vary. Further, datapath functionality must be broadly useful which prevents having application-specific features in the fast path.\u0000 eBPF, extended Berkeley Packet Filter, enables userspace applications to customize and extend the Linux kernel's functionality. It provides flexible platform abstractions for network functions, and is being ported to a variety of platforms. This paper describes the design, implementation, and evaluation of an eBPF-based extensible OVS datapath. The eBPF OVS datapath delivers the equivalent functionality of the existing OVS kernel datapath, while significantly reducing development pain points around maintainability and extensibility. We demonstrate that these benefits don't necessarily have a trade off in regards to performance, with the eBPFbased datapath showing negligible overhead compared to the existing kernel datapath.","PeriodicalId":7046,"journal":{"name":"ACM SIGOPS Oper. Syst. Rev.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77731406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 26

The P416 Programming Language P416编程语言

ACM SIGOPS Oper. Syst. Rev. Pub Date : 2017-09-11 DOI: 10.1145/3139645.3139648

M. Budiu, C. Dodd

引用次数: 51

Hybrid Cloud Storage: Bridging the Gap between Compute Clusters and Cloud Storage 混合云存储:弥合计算集群和云存储之间的差距

ACM SIGOPS Oper. Syst. Rev. Pub Date : 2017-09-11 DOI: 10.1145/3139645.3139653

Abhishek K. Gupta, Richard P. Spillane, Wenguang Wang, Maxime Austruy, Vahid Fereydouny, C. Karamanolis

{"title":"Hybrid Cloud Storage: Bridging the Gap between Compute Clusters and Cloud Storage","authors":"Abhishek K. Gupta, Richard P. Spillane, Wenguang Wang, Maxime Austruy, Vahid Fereydouny, C. Karamanolis","doi":"10.1145/3139645.3139653","DOIUrl":"https://doi.org/10.1145/3139645.3139653","url":null,"abstract":"Thanks to the compelling economics of public cloud storage, the trend in the IT industry is to move the bulk of analytics and application data to services such as AWS S3 and Google Cloud Storage. At the same time, customers want to continue accessing and analyzing much of that data using applications that run on compute clusters that may reside either on public clouds or on-premise. For VMware customers, those clusters run vSphere (sometimes with vSAN) on-premise and in the future may utilize SDDCaaS. Cloud storage exhibits high latencies and it is not appropriate for direct use by applications. A key challenge for these use cases is determining the subset of the typically huge data sets that need to be moved into the primary storage tier of the compute clusters.\u0000 This paper introduces a novel approach for creating a hybrid cloud storage that allows customers to utilize the fast primary storage of their compute clusters as a caching tier in front of a slow secondary storage tier. This approach can be completely transparent requiring no changes to the application. To achieve this, we extended VDFS [16], a POSIX-compliant scale-out filesystem, with the concept of caching-tier volumes.\u0000 VDFS caching-tier volumes resemble regular file system volumes, but they fault-in data from a cloud storage back-end on first access. Cached data are persisted on fast primary storage, close to the compute cluster, like VMware's vSAN.\u0000 Caching-tier volumes use a write-back approach. The enterprise features of the primary storage ensure the persistence and fault tolerance of new or updated data. Write-back from the primary to cloud storage is managed using an efficient change-tracking mechanism built into VDFS called exo-clones [18].\u0000 This paper outlines the architecture and implementation of caching tier volumes on VDFS and reports on an initial evaluation of the current prototype.","PeriodicalId":7046,"journal":{"name":"ACM SIGOPS Oper. Syst. Rev.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85379914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

OS Support for Adaptive Components in Self-aware Systems 自感知系统中自适应组件的操作系统支持

ACM SIGOPS Oper. Syst. Rev. Pub Date : 2017-09-11 DOI: 10.1145/3139645.3139663

João Gabriel Reis, A. A. Fröhlich

{"title":"OS Support for Adaptive Components in Self-aware Systems","authors":"João Gabriel Reis, A. A. Fröhlich","doi":"10.1145/3139645.3139663","DOIUrl":"https://doi.org/10.1145/3139645.3139663","url":null,"abstract":"The current pace of innovation in computing makes it difficult to assume a fixed set of requirements for the whole life span of a system. Aggressive technology scaling also imposes additional constraints to modern hardware platforms. An answer to this question are self-aware systems, which are capable of autonomously sensing and actuating upon themselves to cope with varying requirements. In this paper, we discuss the design and implementation of adaptive components in this scenario from the perspective of the OS. Components can exist in multiple avors that can by dynamically chosen according to current demands. The proposed framework supports this variability for components while preserving their interface contracts, even if avors exist in different domains (software, hardware, remote). The synthesis process delivers tailored wrapper for components according to their avors. Besides reconfiguration, we also support adaptations through dynamic power management and task remapping. The framework also supports component designers in terms of sensing via an event-based mechanism. The framework is validated through a case with three adaptive components in a telecommunication switch (AES, ADPCM, and DTMF) with little overhead both in terms of execution time and memory/silicon consumption.","PeriodicalId":7046,"journal":{"name":"ACM SIGOPS Oper. Syst. Rev.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72627380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research at VMware 在VMware的研究

ACM SIGOPS Oper. Syst. Rev. Pub Date : 2017-09-11 DOI: 10.1145/3139645.3139647

D. Tennenhouse

{"title":"Research at VMware","authors":"D. Tennenhouse","doi":"10.1145/3139645.3139647","DOIUrl":"https://doi.org/10.1145/3139645.3139647","url":null,"abstract":"VMware has its roots in the academic research community, starting with the commercialization of the work on x86 virtualization of Prof. Mendel Rosenblum and his team at Stanford University [1]. Developers embraced VMware's original workstation product and the ensuing work on server virtualization led to today's vSphere platform, which has enabled significant server consolidation, numerous operational benefits, and isolation-based security. In addition, the vast improvements in server utilization provide VMware's customers with significant cost savings and is a key contributor to the environmental sustainability of modern data centers [2].\u0000 VMware has remained true to its research roots, with a strong engineering culture that emphasizes grassroots innovation through hackathons, incubation projects, open source activities, seminars and RADIO, an annual R&D innovation offsite that brings together a substantial fraction of the company's developers. Just a few examples of current activities are open vSwitch (OVS), the virtualization and exploration of non-volatile memory (NVM), securing and managing the Internet of Things (IoT), and support for Containers.\u0000 Over time, there has been a dramatic increase in the scope for innovation at VMware. This paper provides an overview of how that scope has grown and how it has expanded the range of relevant research opportunities along with a description of VMware's recently formed research group, including its mission, composition and significant research thrusts.","PeriodicalId":7046,"journal":{"name":"ACM SIGOPS Oper. Syst. Rev.","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76450268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Hypervisor Approach to Enable Live Migration with Passthrough SR-IOV Network Devices 通过直通SR-IOV网络设备实现热迁移的管理程序方法

ACM SIGOPS Oper. Syst. Rev. Pub Date : 2017-09-11 DOI: 10.1145/3139645.3139649

Xin Xu, Bhavesh Davda

引用次数: 4