公开(公告)号：US20180217777A1

公开(公告)日：2018-08-02

申请号：US15473311

申请日：2017-03-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dongyan Jiang ,  Changhui Lin ,  Krishna Malladi ,  Jongmin Gim ,  Hongzhong Zheng

IPC: G06F3/06 ,  G06F12/10 ,  G06F13/16 ,  G06F13/42

CPC classification number: G06F3/0644 ,  G06F3/0604 ,  G06F3/0619 ,  G06F3/0641 ,  G06F3/0656 ,  G06F3/0665 ,  G06F3/0683 ,  G06F12/10 ,  G06F13/1673 ,  G06F13/4282 ,  G06F2212/65 ,  G06F2213/16

Abstract: A memory module includes a host interface configured to provide an interface to a host computer; one or more memory devices; a deduplication engine configured to provide a virtual memory capacity of the memory module that is larger than a physical size of the one or more memory devices; a memory controller for controlling access to the one or more memory devices; a volatile memory comprising a hash table, an overflow memory region, and a credit unit, wherein the overflow memory region stores user data when a hash collision occurs or the hash table is full, and wherein the credit unit stores an address of an invalidated entry in the overflow memory region; and a control logic is configured to control the overflow memory region and the credit unit and generate a warning indicating a status of the overflow memory region and the credit unit.

公开(公告)号：US20170286010A1

公开(公告)日：2017-10-05

申请号：US15498371

申请日：2017-04-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dongyan Jiang ,  Changhui Lin ,  Krishna Malladi ,  Jongmin Gim ,  Hongzhong Zheng

IPC: G06F3/06 ,  G06F12/0802

Abstract: A dedupe module is provided. The dedupe module includes: a host interface; a dedupe engine to receive a data request from a host system via the host interface; a memory controller; a plurality of memory modules, each memory module being coupled to the memory controller; and a read cache for caching data from the memory controller for use by the dedupe engine.

公开(公告)号：US10678704B2

公开(公告)日：2020-06-09

申请号：US15476757

申请日：2017-03-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dongyan Jiang ,  Changhui Lin ,  Krishna Malladi ,  Jongmin Gim ,  Hongzhong Zheng

IPC: G06F12/1018 ,  G06F3/06 ,  G06F12/0864

Abstract: A method of retrieving data stored in a memory associated with a dedupe module is provided. The method includes: identifying a logical address of the data; identifying a physical line ID of the data in accordance with the logical address by looking up at least a portion of the logical address in a translation table; locating a respective physical line, the respective physical line corresponding to the PLID; and retrieving the data from the respective physical line, the retrieving including copying a respective hash cylinder to the read cache, the respective hash cylinder including: a respective hash bucket, the respective hash bucket including the respective physical line; and a respective reference counter bucket, the respective reference counter bucket including a respective reference counter associated with the respective physical line.

公开(公告)号：US10528284B2

公开(公告)日：2020-01-07

申请号：US15498371

申请日：2017-04-26

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dongyan Jiang ,  Changhui Lin ,  Krishna Malladi ,  Jongmin Gim ,  Hongzhong Zheng

IPC: G06F3/06

Abstract: A dedupe module is provided. The dedupe module includes: a host interface; a dedupe engine to receive a data request from a host system via the host interface; a memory controller; a plurality of memory modules, each memory module being coupled to the memory controller; and a read cache for caching data from the memory controller for use by the dedupe engine.

公开(公告)号：US10268413B2

公开(公告)日：2019-04-23

申请号：US15473311

申请日：2017-03-29

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dongyan Jiang ,  Changhui Lin ,  Krishna Malladi ,  Jongmin Gim ,  Hongzhong Zheng

IPC: G06F12/00 ,  G06F3/06 ,  G06F12/10 ,  G06F13/16 ,  G06F13/42

Abstract: A memory module includes a host interface configured to provide an interface to a host computer; one or more memory devices; a deduplication engine configured to provide a virtual memory capacity of the memory module that is larger than a physical size of the one or more memory devices; a memory controller for controlling access to the one or more memory devices; a volatile memory comprising a hash table, an overflow memory region, and a credit unit, wherein the overflow memory region stores user data when a hash collision occurs or the hash table is full, and wherein the credit unit stores an address of an invalidated entry in the overflow memory region; and a control logic is configured to control the overflow memory region and the credit unit and generate a warning indicating a status of the overflow memory region and the credit unit.

公开(公告)号：US20170286313A1

公开(公告)日：2017-10-05

申请号：US15476757

申请日：2017-03-31

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dongyan Jiang ,  Changhui Lin ,  Krishna Malladi ,  Jongmin Gim ,  Hongzhong Zheng

IPC: G06F12/1018 ,  G06F12/0864 ,  G06F3/06

Abstract: A method of retrieving data stored in a memory associated with a dedupe module is provided. The method includes: identifying a logical address of the data; identifying a physical line ID of the data in accordance with the logical address by looking up at least a portion of the logical address in a translation table; locating a respective physical line, the respective physical line corresponding to the PLID; and retrieving the data from the respective physical line, the retrieving including copying a respective hash cylinder to the read cache, the respective hash cylinder including: a respective hash bucket, the respective hash bucket including the respective physical line; and a respective reference counter bucket, the respective reference counter bucket including a respective reference counter associated with the respective physical line.