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    • 5. 发明授权
    • Computer system, virtual machine monitor and scheduling method for virtual machine monitor
    • 计算机系统,虚拟机监控和虚拟机监控调度方法
    • US08423999B2
    • 2013-04-16
    • US12834374
    • 2010-07-12
    • Shuhei MatsumotoHironori InoueShintaro Wada
    • Shuhei MatsumotoHironori InoueShintaro Wada
    • G06F9/455G06F9/46
    • G06F9/45533G06F9/45541G06F9/4881G06F2209/483Y02D10/24
    • In a computer system according to the background art, when a request to halt a virtual processor was detected, the virtual processor was blocked. In the blocking method, latency of virtual halt exit of the virtual processor was so long that a problem of performance was caused. A virtual machine monitor selects either of a busy wait method for making repeatedly examination until the virtual halt state exits while the virtual processor stays on the physical processor and a blocking method for stopping execution of the virtual processor and scheduling other virtual processors on the physical processor while yielding the operating physical processor and checking off scheduling of the virtual processor to the physical processor, based on a virtual processor halt duration predicted value of the virtual processor which is an average value of latest N virtual processor halt durations of the virtual processor.
    • 在根据背景技术的计算机系统中,当检测到停止虚拟处理器的请求时,虚拟处理器被阻止。 在阻塞方法中,虚拟处理器的虚拟停止退出的延迟太长,导致性能问题。 虚拟机监视器选择忙等待方法进行重复检查,直到虚拟停止状态退出,而虚拟处理器停留在物理处理器上,并且阻止方法停止虚拟处理器的执行并且调度物理处理器上的其他虚拟处理器 同时基于虚拟处理器停止作为虚拟处理器的最新N个虚拟处理器暂停持续时间的平均值的虚拟处理器的持续时间预测值,产生操作物理处理器并检查虚拟处理器到物理处理器的调度。