Prioritizing Garbage Collection and Block Allocation Based on I/O History for Logical Address Regions

摘要

Systems, methods and/or devices are used to enable prioritizing garbage collection and block allocation based on I/O history for logical address regions. 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, (2) in accordance with the plurality of I/O requests over a predetermined time period, identifying an idle region of the plurality of regions in the logical address space of the host, and (3) in accordance with the identification of the idle region, enabling garbage collection of data storage blocks, in the storage device, that store data in the idle region.

主权项

1. A method, comprising:
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; in accordance with the plurality of I/O requests over a predetermined time period, identifying an idle region of the plurality of regions in the logical address space of the host; and in accordance with the identification of the idle region, enabling garbage collection of data storage blocks, in the storage device, that store data in the idle region.