US 2020/0264774 A1Published application

Method of consolidating data streams for multi-stream enabled ssds

AssigneeSamsung Electronics Co., Ltd.

InventorsHingkwan HUEN, Changho CHOI

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Abstract

A Solid State Drive (SSD) is disclosed. The SSD may include a flash memory to store data and support for a number of device streams. The SSD may also include an SSD controller to manage reading data from and writing data to the flash memory. The SSD may also include a host interface logic, which may include a receiver to receive the commands associated with software streams from a host, a timer to time a window, a statistics collector to determine values for at least one criterion for the software streams from the commands, a ranker to rank the software streams according to the values, and a mapper to establish a mapping between the software streams and device streams.

Claims20

Dependent claims

A Solid State Drive (SSD), comprising:

flash memory to store data;
support for at least a first device stream and a second device stream in the SSD;
an SSD controller to manage reading data from and writing data to the flash memory responsive to a first command and a second command;
and
a host interface logic implemented using at least a circuit, including:
a receiver to receive the first command associated with the first software stream and the second command associated with the second software stream from a host;
a timer to time a window;
a statistics collector to determine a first value for a criterion for the first software stream during the window and a second value for the criterion for the second software stream during the window, responsive to the first command and the second command;
a ranker to rank the first software stream and the second software stream according to the first value for the criterion for the first software stream and the second value for the criterion for the second software stream;
and
a mapper to establish a mapping, the mapping operative to map a third software stream in a first subset of the first software stream and the second software stream to a unique device stream in the first device stream and the second device stream in the SSD and to map a fourth software stream in a second subset of the first software stream and the second software stream to a consolidated device stream of the first device stream and the second device stream in the SSD,
wherein the first command is assigned to the unique device stream and the second command is assigned to the consolidated device stream.

9 more elements

An article comprising a tangible, non-transitory storage medium, the tangible, non-transitory storage medium having stored thereon a driver that may be executed by a machine, the driver including:

a receiver to receive the first command associated with the first software stream and the second command associated with the second software stream from a host;
a timer to time a window;
a statistics collector to determine a first value for a criterion for the first software stream during the window and a second value for the criterion for the second software stream during the window, responsive to the first command and the second command;
a ranker to rank the first software stream and the second software stream according to the first value for the criterion for the first software stream and the second value for the criterion for the second software stream;
a mapper to establish a mapping, the mapping operative to map a third software stream in a first subset of the first software stream and the second software stream to a unique device stream in at least a first device stream and a second device stream in the SSD and to map a fourth software stream in a second subset of the first software stream and the second software stream to a consolidated device stream of the first device stream and the second device stream in the SSD;
a device stream identifier (ID) adder to add to a third command a device stream ID for a device stream corresponding to a software stream associated with the third command;
and
a transmitter to transmit the third command to the SSD.

5 more elements

A method, comprising:

receiving a first command associated with a first software stream and a second associated with a second software stream, the first command and the second command to be processed using a Solid State Drive (SSD) including at least a first device stream and a second device stream;
determining a first value for a criterion for the first software stream and a second value for the criterion for the second software stream, responsive to the first command and the second command;
identifying first and second subsets of the first software stream and the second software stream responsive to the first value for the criterion and the second value for the criterion;
generating a mapping, the mapping operative to map a third software stream in a first subset of the first software stream and the second software stream to a unique device stream in the first device stream and the second device stream in the SSD and to map a fourth software stream in a second subset of the first software stream and the second software stream to a consolidated device stream of the first device stream and the second device stream in the SSD;
receiving a third command associated with one of the first software stream or the second software stream after generating the mapping;
assigning the third command to one of the unique device stream or the consolidated device stream responsive to the mapping;
and
processing the third command on the SSD using the assigned device stream.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/866,545Filed 4 May 2020
Priority: 26 Oct 2016
Published: 20 Aug 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

G06F 3/0605
Improving or facilitating administration, e.g. storage management: by facilitating the interaction with a user or administrator
G06F 3/0635
Configuration or reconfiguration of storage systems: by changing the path, e.g. traffic rerouting, path reconfiguration
G06F 3/0659
Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices: command handling…
G06F 3/0679
Single storage device: non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]

Family

Application62/413,177Us provisional application · filed 26 Oct 2016
Application62/448,958Us provisional application · filed 20 Jan 2017
Application15/458,968Continuation · filed 14 Mar 2017
Application16/219,936Continuation · filed 13 Dec 2018
Application16/866,545Continuation
US 10,216,417 B2Related patent
US 10,739,995 B2Related patent
US 11,048,411 B2Related patent
US 2018/0113642 A1Published application
US 2019/0129617 A1Published application
US 2020/0264774 A1This patent

From the US filing history. Foreign family members aren’t listed.

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