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MIGRATION OF PROCESSES, FILES, AND VIRTUAL DEVICES IN THE MDX OPERATING SYSTEM

机译：在MDX操作系统中迁移过程，文件和虚拟设备

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Load management in distributed systems is usually focused on balancing process execution and communication load. Stress on storage media and I/O-devices is considered only indirectly or disregarded. For I/O-intensive processes this imposes severe restrictions on balancing algorithms: processes have to be placed relative to fixed allocated resources. Therefore, beyond process migration, there is a need for a migration of all operating system objects, like files, pipes, timers, virtual terminals, and print jobs. In addition to new options for balancing cpu loads, this also makes it possible to balance the loads associated with these objects like storage capacity or I/O-bandwidth. This paper presents a concept for a general migration of nearly all operating system objects of a UNIX environment. The migrations of these objects work all in the same UNIX compliant and transparent manner. Objects can be moved throughout a distributed system independently of each other and at any time, according to a user defined policy. The migration mechanism is implemented as part of the MDX operating system; we present performance measurements. We believe that most of the mechanism can also apply to other message-passing based distributed operating systems.
机译：分布式系统中的负载管理通常集中于平衡流程执行和通信负载。仅间接或不考虑存储介质和I / O设备上的压力。对于I / O密集型进程，这对平衡算法施加了严格的限制：进程必须相对于固定分配的资源进行放置。因此，除了进程迁移之外，还需要迁移所有操作系统对象，例如文件，管道，计时器，虚拟终端和打印作业。除了用于平衡CPU负载的新选项之外，这还使得可以平衡与这些对象相关的负载，例如存储容量或I / O带宽。本文提出了用于UNIX环境的几乎所有操作系统对象的一般迁移的概念。这些对象的迁移全部以相同的UNIX兼容且透明的方式进行。根据用户定义的策略，可以随时随地在整个分布式系统中相互独立地移动对象。迁移机制是作为MDX操作系统的一部分实现的；我们介绍性能指标。我们认为，大多数机制也可以应用于其他基于消息传递的分布式操作系统。

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