Samsung Electronics Co., Ltd.

Nithya Ramakrishnan

Zhengyu Yang

Clay Mayers

T David Evans

Allen Russell Andrews

Sudheendra Grama Sampath

Ping Terence Wong

Thomas Edward Rainey, Iii

Olufogorehan Adetayo Tunde-Onadele

Venkatraman Balasubramanian

Kedar Shrikrishna Patwardhan

Caroline Diana Kahn

Michael Kurt Gehlen

A system and method for storing data. In some embodiments, the method includes: receiving, by a persistent key-value storage device including a hash for mapping keys to value addresses, a first instruction, the first instruction being an instruction for accessing a first key, in a first key-value collection; and recording the first instruction in an instruction log of the persistent key-value storage device.

Key value storage device with hashing

A method for dispatching input-output in a system. The system may include a centralized processing circuit, a plurality of persistent storage targets, a first input-output processor, and a second input-output processor. The method may include determining whether the first input-output processor is connected to a first target of the plurality of persistent storage targets; determining whether the second input-output processor is connected to the first target; and in response to determining that both the first input-output processor is connected to the first target, and the second input-output processor is connected to the first target, dispatching a first plurality of input-output requests, each to either the first input-output processor or the second input-output processor, the dispatching being in proportion to a service rate of the first input-output processor to the first target and a service rate of the second input-output processor to the first target, respectively.

Intelligent path selection and load balancing

A key value (KV) store, a method thereof, and a storage system are provided herein. The KV store may include a key logger; and a processor configured to receive a first command for storing a first KV in the KV store, write a first value of the first KV to a first NAND page, generate an extent map for identifying the first memory page including the first value, write the extent map to a second memory page, append an entry for storing the first KV to the key logger, and update a device hashmap of the KV store to include a first key of the first KV, upon a threshold being met within the key logger.

Key packing for flash key value store operations

A device is described. The device may include a network port to connect to a network. The device may include a first controller configured to send and receive a first communication across the network using the network port. The device may include storage for a controller record for the controller may store a congestion score, a congestion timestamp, and an uncongested timestamp. The device may also include storage for a device-wide record including at least a second congestion score and a second congestion timestamp for the first controller and a third congestion score and a third congestion timestamp for a second controller. The device-wide record may be based at least in part on the controller record. A throttle may limit a second communication of a second controller based at least in part on the device-wide record.

Coordinated congestion control in network-attached devices

A method of adapting a first key-value store to a second key-value store may include determining a conversion strategy based on one or more characteristics of the first key-value store and one or more characteristics of the second key-value store, converting the second key-value store to a converted key-value store based on the conversion strategy, and mapping the first key-value store to the converted key-value store based on a mapping function. The converted key-value store may be accessed on-the-fly. A data storage system may include a key-value interface configured to provide access to a lower key-value store, and a key-value adapter coupled to the key-value interface and configured to adapt an upper key-value store to the lower key-value store, wherein the key-value adapter may be configured to adapt at least two different types of the upper key-value store to the lower key-value store.

Methods and systems for adapting multiple key-value stores

A load balancing system includes: a centralized queue; a pool of resource nodes connected to the centralized queue; one or more processors; and memory coupled to the one or more processors and storing instructions that, when executed by the one or more processors, cause the one or more processors to: monitor a queue status of the centralized queue to identify a bursty traffic period; calculate an index value for a load associated with the bursty traffic period; select a load balancing strategy based on the index value; distribute the load to the pool of resource nodes based on the load balancing strategy; observe a state of the pool of resource nodes in response to the load balancing strategy; calculate a reward based on the observed state; and adjust the load balancing strategy based on the reward.

Systems and methods for spike detection and load balancing resource management

A system and method for managing input output queue pairs. In some embodiments, the method includes calculating a system utilization ratio, the system utilization ratio being a ratio of: an arrival rate of input output requests, to a service rate; determining whether: the system utilization ratio has exceeded a first threshold utilization during a time period exceeding a first threshold length, and adding a new queue pair is expected to improve system performance; and in response to determining: that the system utilization ratio has exceeded the first threshold utilization during a time period exceeding the first threshold length, and that adding a new queue pair is expected to improve system performance: adding a new queue pair.

Growing community of inventors

San Diego, CA, United States of America

Nithya Ramakrishnan