Sk Hynix Nand Product Solutions Corp.

Darshan Mallapur Vishwanath

Henry C Chu

David J Pelster

David B Carlton

Jonathan M Hughes

Sarvesh Varakabe Gangadhar

Mark Anthony Sumabat Golez

Mechanisms for improving read command processing times in a solid-state drive (SSD) are provided, the mechanisms comprising: determining a workload type of an SSD; in response to determining that the workload type is a pure read workload type: determining at least one command size into which an original background write is to be split-up using at least one hardware processor; and splitting-up the background write into a plurality of split background writes, each having one of the determined at least one command size. In some embodiments, the at least one command size accounts for a page of the physical medium of the SSD. In some embodiments, the at least one command size includes at least two different sizes. In some embodiments, the mechanisms further comprise combining two or more split background writes. In some embodiments, the original background write is split-up before being placed in a channel queue.

System method for improving read command process times in solid-state drives (SSD) by having processor split-up background writes based on determined command size

A device and related method, the device including memory and processing circuitry. The memory includes sets of source memory bands and a defragmentation destination memory band. Each set of source memory bands includes source memory bands and at least one portion of each source memory band stores valid data. The processing circuitry determines a merit score corresponding to each source memory band based on one or more characteristics of portions of data of each corresponding source memory band and determines, for each set of source memory bands, a respective source memory band that corresponds to a second-highest merit score. The processing circuitry identifies a set of source memory bands that includes a source memory band corresponding to a highest second-highest merit score and stores at least one portion of valid data from the source memory bands of the identified set of source memory bands to the defragmentation destination memory band.

Devices and methods for improving multi-stream write amplification factor

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Santa Clara, CA, United States of America

Darshan Mallapur Vishwanath