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Samsung patents smarter memory cleanup for storage systems

This patent describes a method for managing storage memory by adjusting how much data is analyzed during routine cleanup tasks. It calculates a ratio between normal data requests and cleanup work to keep the system running efficiently as free space changes.

Why it mattersIt helps storage devices manage their internal housekeeping more efficiently, which can help maintain consistent performance over time.

In the filing’s own words

In a method of operating a memory system disclosed, whether a first condition is satisfied is determined. The first condition is associated with free blocks and garbage collection (GC) target blocks from among a plurality of memory blocks. In response to the first condition being satisfied, a size of a data sample associated with executions of a host input/output request and GC is adjusted. The data sample is generated based on the adjusted size of the data sample. The data sample includes a downscaled current valid page count (VPC) ratio and the first number of previous host input/output request to GC processing ratios. A current host input/output request to GC processing ratio is calculated based on the data sample. The host input/output request and the GC are performed based on the current host input/output request to GC processing ratio.

What exactly they claim (claim 1)

1. A method of operating a storage system, the method comprising: determining a first garbage collection (GC) level among a plurality of GC levels based on a level of decrease of free blocks among a plurality of memory blocks; reducing a size of a data sample associated with executions of host input/output requests and GC input/output requests to generate a first data sample having the reduced size, based on the first GC level; and performing the host input/output requests and the GC input/output requests, based on the first data sample.

Facts

Company
Samsung (Samsung Electronics Co., Ltd.)
Official title
Method of operating memory system and memory system performing the same
Patent number
US12761804B2
Application number
19170582
Filed
Apr 4, 2025
Granted
Oct 13, 2026
Inventors
3
Claims
20

Classified under

G06F 3/0613 Physics & computingG06F 3/064 Physics & computingG06F 3/0679 Physics & computingG06F 12/0246 Physics & computingG06F 2212/7205 Physics & computing
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.