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Using History of I/O Sequences to Trigger Cached Read Ahead in a Non-Volatile Storage Device

机译:使用I / O序列的历史记录来触发非易失性存储设备中的缓存预读

摘要

Systems, methods and/or devices are used to enable using history of I/O sequences to trigger cached read ahead in a non-volatile storage device. In one aspect, the method includes (1) receiving, at a storage device, a plurality of input/output (I/O) requests from a host, the plurality of I/O requests including read requests and write requests to be performed in a plurality of regions in a logical address space of the host, and (2) performing one or more operations for each region of the plurality of regions in the logical address space of the host, including (a) determining whether the region has a history of sequential read requests during a predetermined time period, and (b) in accordance with a determination that the region has a history of sequential read requests during the predetermined time period, enabling read ahead logic for the region.
机译:系统,方法和/或设备用于启用使用I / O序列的历史来触发非易失性存储设备中缓存的预读。在一方面,该方法包括(1)在存储设备处从主机接收多个输入/输出(I / O)请求,该多个I / O请求包括要在其中执行的读取请求和写入请求。主机的逻辑地址空间中的多个区域,以及(2)对主机的逻辑地址空间中的多个区域中的每个区域执行一个或多个操作,包括(a)确定该区域是否具有历史记录在预定时间段内对顺序读取请求进行排序,以及(b)根据确定该区域在预定时间段内具有顺序读取请求的历史记录,从而启用该区域的预读逻辑。

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