De-allocation command processing method and storage equipment thereof

The invention discloses a method for processing a de-allocation command and storage equipment thereof, and the method comprises the following steps: obtaining an address range indicated by the de-allocation command in response to the received de-allocation command; and updating the entry of the de-allocation table according to the address range indicated by the de-allocation command. According tothe method and the equipment, the de-allocation command and the delay of processing the de-allocation command on IO command processing can be reduced, the influence of processing the de-allocation command on IO command processing bandwidth is reduced, and write amplification introduced in a garbage collection process is further reduced. 本申请公开了处理去分配命令的方法及其存储设备，该方法包括如下步骤：响应于接收到去分配命令，获取去分配命令所指示的地址范围；根据去分配命令所指示的地址范围，更新去分配表的表项。本申请可以降低去分配命令以及处理去分配命令对IO命令处理造成的延迟，减轻降低处理去分配命令对IO命令处理带宽的影响，并进一步降低垃圾回收过程引入的写放大。