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    • 33. 发明授权
    • Memory operation command latency management
    • 内存操作命令延迟管理
    • US08321627B1
    • 2012-11-27
    • US13267747
    • 2011-10-06
    • Thomas J. NorrieAndrew T. SwingJonathan Mayer
    • Thomas J. NorrieAndrew T. SwingJonathan Mayer
    • G06F12/00
    • G06F13/161G06F12/0246G06F13/1642G06F2212/1024G06F2212/7208
    • Methods and apparatus for managing latency of memory commands are disclosed. An example method includes receiving memory operation commands for execution by a data storage device, each memory operation command being associated, for execution, with one of a plurality of memory devices. The example method also includes maintaining, for each memory device, a respective cumulative latency estimate. The example method also includes, for each memory operation command, when received by the memory controller, comparing the respective cumulative latency estimate of the associated memory device with a latency threshold for the received memory operation command. In the event the cumulative latency estimate is at or below the latency threshold, the received memory operation command is provided to a respective command queue operatively coupled with the respective memory device. In the event the cumulative latency estimate is above the latency threshold, the received memory operation command is returned to a host device.
    • 公开了用于管理存储器命令的等待时间的方法和装置。 一个示例性方法包括接收由数据存储设备执行的存储器操作命令,每个存储器操作命令与多个存储器件中的一个相关联以供执行。 示例性方法还包括为每个存储器设备维护相应的累积延迟估计。 对于每个存储器操作命令,示例性方法还包括当由存储器控制器接收时,将相关联的存储器件的相应累积等待时间估计与接收到的存储器操作命令的等待时间阈值进行比较。 在累积等待时间估计处于等于或低于等待时间阈值的情况下,所接收的存储器操作命令被提供给与各个存储器设备可操作地耦合的相应命令队列。 在累积延迟估计高于延迟阈值的情况下,接收到的存储器操作命令被返回到主机设备。