Invention Grant
US07774794B2 Method and system for managing bandwidth in a virtualized system 有权
用于管理虚拟化系统中的带宽的方法和系统

Method and system for managing bandwidth in a virtualized system
Abstract:
A method of improving USB device virtualization to prevent bus bandwidth from being over allocated when isochronous USB devices are attached to multiple virtual machines by attaching a dummy device to each virtual machine which will mimic the bandwidth reservations made by real devices in other virtual machines, thus allowing each virtual machine to determine the true available bandwidth. The dummy devices are represented by incorporating a dummy device driver in each virtual machine and emulating the dummy device in software in the VMM.
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