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首页> 外文会议>IEEE Symposium on Reliable Distributed Systems >Resource-Aware Migratory Services in Wide-Area Shared Computing Environments
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Resource-Aware Migratory Services in Wide-Area Shared Computing Environments

机译：广域共享计算环境中的资源感知迁移服务

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摘要

In this paper we present the design and evaluation of a system for deploying highly available and migratable services in shared infrastructures, such as the PlanetLab, where the available resource capacities at a node can fluctuate significantly. A migratable service can monitor its operating conditions and autonomously relocate itself to another node when the available resource capacities at the current node fall below certain acceptable limits. We utilize the autonomous mobile agent paradigm for building such migratable services. Such agents can monitor their operating conditions and follow various migration policies. We investigate here the mechanisms for service relocation, and client-side protocols to access migratory services. The ``blackout periods'', i.e. the time during which the clients are unable to access a migrating service, need to be minimized and kept within some tolerable limits for services required to be highly available. We first present the design of a migratable service implemented using a mobile agent, and evaluate its performance in terms of the blackout periods and the service agent's abilities to autonomously migrate in the network. We replicate service agents to reduce the blackout periods, and develop the coordination protocols for autonomous agent migration in a group of service agents. We also present here our work for monitoring PlanetLab nodes for their available resource capacities in order to assist a migratory service in selecting a target node for relocation.
机译：在本文中，我们提出一个系统的共享基础设施，如PlanetLab的，在此，节点的可用资源能力可以显著波动部署高可用和可迁移服务的设计和评估。甲迁移服务可以监控其操作条件和自身自主地重新定位到另一节点时，在低于一定可接受的限度当前节点落入可用资源容量。我们利用建立这种迁移服务自律移动代理模式。这些代理程序可以监视其工作条件，并按照不同的移民政策。我们在这里探讨服务搬迁到接入服务迁徙的机制，和客户端的协议。在``封锁期'，即在此期间，客户端将无法访问迁移服务的时间，需要被最小化，并保持为高度可用所需的服务的一些可容许的限度内。我们首先提出利用移动代理实现的可迁移服务的设计，并评估其在停电期间和服务代理的能力方面的性能，以自主网络中迁移。我们复制服务代理，以减少停电时间，并制定自主代理迁移协调协议的一组服务代理英寸我们还提出我们这里的工作，以协助迁徙的服务选择目标节点搬迁监测PlanetLab的节点为他们提供资源的能力。

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