公开(公告)号：US11281577B1

公开(公告)日：2022-03-22

申请号：US16012243

申请日：2018-06-19

Applicant: PURE STORAGE, INC.

Inventor： Aswin Karumbunathan ,  Yanwei Jiang ,  Naveen Neelakantam ,  Scott Chao ,  Bo Feng ,  Kiron Vijayasankar

IPC: G06F3/06 ,  G06F12/02

Abstract: A storage system determines a present amount of reclaimable space in storage memory. The storage system determines a garbage collection directive based on the present amount of reclaimable space in comparison to a target amount of reclaimable space. The storage system selects blocks of storage memory for a group of blocks for garbage collection. Each block selected has greater than or equal to a threshold amount of reclaimable space in accordance with the garbage collection directive. The storage system performs garbage collection, using blocks from the group.