公开(公告)号：US09880967B2

公开(公告)日：2018-01-30

申请号：US14800750

申请日：2015-07-16

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Santosh Singh ,  Vikram Singh

IPC: G06F13/00 ,  G06F13/42 ,  G06F13/28 ,  G06F13/16

CPC classification number: G06F13/4282 ,  G06F13/1642 ,  G06F13/28

Abstract: A method maintaining a fixed QoS for a PCIe device accessed by multiple hosts includes; receiving commands from the hosts in PCIe function queues of the PCIe device, fetching the commands from the PCIe function command queues, queuing the commands according to a command arbitration policy established for the PCIe device, storing the queued commands in an internal memory of the PCIe device, retrieving the queued commands from the internal memory in a sequence determined by applying a calculated QoS to at least one of the queued commands, and allocating PCIe device resources based on payload information corresponding to each one of the retrieved commands.

公开(公告)号：US09600209B2

公开(公告)日：2017-03-21

申请号：US14694060

申请日：2015-04-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Kavirayani Venkata Ramakrishna Chaitanya ,  Santosh Singh ,  Vikram Singh

IPC: G06F12/00 ,  G06F3/06 ,  G06F12/02

CPC classification number: G06F3/0679 ,  G06F3/0608 ,  G06F3/0616 ,  G06F3/064 ,  G06F12/0246 ,  G06F2212/1044 ,  G06F2212/7201

Abstract: In some example embodiments, a method of organizing an address mapping table of a flash storage device based on Logical Block Address (LBA) size may comprise: identifying an extent of correlation between the LBA and flash page sizes, wherein the extent of correlation indicates greater or lesser extent; computing a total number of entries in each meta page of the table; and/or organizing the table with the total number of entries. In some example embodiments, a method of organizing an address mapping table of a flash storage device based on LBA size may comprise: determining flash page size of the flash storage device; determining the LBA size; and/or comparing the flash page and LBA sizes. When the flash page size is greater, the table may be organized based on flash page size. When the flash page size is less, the table may be organized based on LBA size.