The use of name spaces in plan 9

Pike, Rob; Presotto, Dave; Thompson, Ken; Trickey, Howard; Winterbottom, Phil

doi:10.1145/506379.506413

Cited by 11 publications

(10 citation statements)

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“…The idea of containers dates back to 1992 [31] and have matured over the years with the introduction of Linux namespace [32] and the LXC project [33], a solution designed to execute full operating system images in containers. Application containers [34] are an evolution of operating system virtualization.…”

Section: Containersmentioning

confidence: 99%

Research challenges in legal-rule and QoS-aware cloud service brokerage

Casalicchio

Cardellini

Interino

et al. 2018

Future Generation Computer Systems

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The ICT industry and specifically critical sectors, such as healthcare, transportation, energy and government, require as mandatory the compliance of ICT systems and services with legislation and regulation, as well as with standards. In the era of cloud computing, this compliance management issue is exacerbated by the distributed nature of the system and by the limited control that customers have on the services. Today, the cloud industry is aware of this problem (as evidenced by the compliance program of many cloud service providers), and the research community is addressing the many facets of the legal-rule compliance checking and quality assurance problem.\ud \ud Cloud service brokerage plays an important role in legislation compliance and QoS management of cloud services. In this paper we discuss our experience in designing a legal-rule and QoS-aware cloud service broker, and we explore relate research issues. Specifically we provide three main contributions to the literature: first, we describe the detailed design architecture of the legal-rule and QoS-aware broker. Second, we discuss our design choices which rely on the state of the art solutions available in literature. We cover four main research areas: cloud broker service deployment, seamless cloud service migration, cloud service monitoring, and legal rule compliance checking. Finally, from the literature review in these research areas, we identify and discuss research challenges

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Section: Containersmentioning

confidence: 99%

Research challenges in legal-rule and QoS-aware cloud service brokerage

Casalicchio

Cardellini

Interino

et al. 2018

Future Generation Computer Systems

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“…Hare's design resembles networked distributed file systems such as NFS [30], AFS [20], and Plan 9 [32], and borrows some techniques from these designs (e.g., directory caching, close-to-open consistency, etc). The primary differences are that Hare can exploit shared DRAM to maintain a single buffer cache, that directory entries from a single directory are distributed across servers, and that file descriptors can be shared among clients.…”

Section: Distributed File Systemsmentioning

confidence: 99%

Hare

Gruenwald¹,

Sironi²,

Kaashoek³

et al. 2015

Proceedings of the Tenth European Conference on Computer Systems

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Hare is a new file system that provides a POSIX-like interface on multicore processors without cache coherence. Hare allows applications on different cores to share files, directories, and file descriptors. The challenge in designing Hare is to support the shared abstractions faithfully enough to run applications that run on traditional shared-memory operating systems, with few modifications, and to do so while scaling with an increasing number of cores.To achieve this goal, Hare must support features (such as shared file descriptors) that traditional network file systems don't support, as well as implement them in a way that scales (e.g., shard a directory across servers to allow concurrent operations in that directory). Hare achieves this goal through a combination of new protocols (including a 3-phase commit protocol to implement directory operations correctly and scalably) and leveraging properties of non-cache-coherent multiprocessors (e.g., atomic low-latency message delivery and shared DRAM).An evaluation on a 40-core machine demonstrates that Hare can run many challenging Linux applications (including a mail server and a Linux kernel build) with minimal or no modifications. The results also show these applications achieve good scalability on Hare, and that Hare's techniques are important to achieving scalability.

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“…A different approach to resource access comes from the operating system community: Plan9 integrates a wide variety of local and remote [27] resources and services into a single directory tree [26] that is made available on a per-process basis, but mediated by the kernel and accessed only indirectly via system calls and string-based identifiers. User level filesystems like FUSE [28] or the BSD Pass-to-User-Space [18] system bring some of these ideas to commercial operating systems, but make these filesystems visible globally to all processes on a machines.…”

Section: Related Workmentioning

confidence: 99%

Polymorphic identifiers

Weiher

Hirschfeld

2013

Proceedings of the 9th Symposium on Dynamic Languages

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In object-oriented programming, polymorphic dispatch of operations decouples clients from specific providers of services and allows implementations to be modified or substituted without affecting clients.The Uniform Access Principle (UAP) tries to extend these qualities to resource access by demanding that access to state be indistinguishable from access to operations. Despite language features supporting the UAP, the overall goal of substitutability has not been achieved for either alternative resources such as keyed storage, files or web pages, or for alternate access mechanisms: specific kinds of resources are bound to specific access mechanisms and vice versa. Changing storage or access patterns either requires changes to both clients and service providers and trying to maintain the UAP imposes significant penalties in terms of code-duplication and/or performance overhead.We propose introducing first class identifiers as polymorphic names for storage locations to solve these problems. With these Polymorphic Identifiers, we show that we can provide uniform access to a wide variety of resource types as well as storage and access mechanisms, whether parametrized or direct, without affecting client code, without causing code duplication or significant performance penalties.

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The use of name spaces in plan 9

Cited by 11 publications

References 0 publications

Research challenges in legal-rule and QoS-aware cloud service brokerage

Research challenges in legal-rule and QoS-aware cloud service brokerage

Hare

Polymorphic identifiers

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