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    • 4. 发明授权
    • Virtual machine monitors for scalable multiprocessors
    • 可扩展多处理器的虚拟机监视器
    • US6075938A
    • 2000-06-13
    • US95283
    • 1998-06-10
    • Edouard BugnionScott W. DevineMendel Rosenblum
    • Edouard BugnionScott W. DevineMendel Rosenblum
    • G06F9/46G06F12/10G06F9/455G06F13/10
    • G06F9/544G06F12/0284G06F12/109
    • The problem of extending modern operating systems to run efficiently on large-scale shared memory multiprocessors without a large implementation effort is solved by a unique type of virtual machine monitor. Virtual machines are used to run multiple commodity operating systems on a scalable multiprocessor. To reduce the memory overheads associated with running multiple operating systems, virtual machines transparently share major data structures such as the operating system code and the file system buffer cache. We use the distributed system support of modem operating systems to export a partial single system image to the users. Two techniques, copy-on-write disks and the use of a special network device, enable transparent resource sharing without requiring the cooperation of the operating systems. This solution addresses many of the challenges facing the system software for these machines. The overheads of the monitor are small and the approach provides scalability as well as the ability to deal with the non-uniform memory access time of these systems. The overall solution achieves most of the benefits of operating systems customized for scalable multiprocessors yet it can be achieved with a significantly smaller implementation effort.
    • 通过独特类型的虚拟机监视器解决了扩展现代操作系统以在大型共享内存多处理器上高效运行而无需大量实施工作的问题。 虚拟机用于在可扩展的多处理器上运行多个商品操作系统。 为了减少与运行多个操作系统相关的内存开销,虚拟机透明地共享主要数据结构,如操作系统代码和文件系统缓冲区缓存。 我们使用调制解调器操作系统的分布式系统支持将部分单系统映像导出到用户。 两种技术,写时写入磁盘和使用特殊的网络设备,可以实现透明的资源共享,而无需操作系统的协作。 该解决方案解决了这些机器的系统软件面临的许多挑战。 监视器的开销很小,该方法提供了可扩展性以及处理这些系统的非均匀内存访问时间的能力。 整体解决方案可实现针对可扩展多处理器定制的操作系统的大多数优点,但可以通过显着更小的实施工作实现。