Memory Controller Mode Switching for Garbage Collection Thresholds
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Solution Overview
Problem
Existing garbage collection strategies in non-volatile memory modules reduce write speed and affect read and write efficiency, necessitating improved methods to manage storage space and ensure service quality.
Innovation Solution
A memory controller and data storage system that allows a host system to select a data consolidation mode, using different strategies based on user needs and scenario-specific parameters to manage physical cell states and storage space efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If garbage collection is performed to release storage space, then storage space utilization is improved, but write speed is reduced
Solution Approach 1:
The patent implements dynamic garbage collection mode switching based on real-time monitoring of physical cell states. The system transitions between different garbage collection modes (first garbage collection mode and second garbage collection mode) depending on the number of physical cells requiring consolidation, thereby adapting the collection strategy to current storage conditions and minimizing write speed impact.
Solution Approach 2:
The patent changes the parameter of garbage collection threshold to determine when consolidation is needed. By monitoring the number of physical cells with invalid data and comparing it against a threshold, the system dynamically adjusts whether to perform garbage collection, thereby optimizing the balance between storage space release and write performance.
2Quantity of substance
If existing garbage collection strategy is used, then storage space is managed, but read and write efficiency is affected
Solution Approach 1:
The memory controller autonomously monitors the state of physical cells and automatically determines when garbage collection is needed based on the number of cells requiring consolidation. This self-service mechanism eliminates the need for external intervention and optimizes storage space management while minimizing impact on read and write operations.
Solution Approach 2:
The system dynamically adjusts garbage collection behavior based on real-time storage conditions. When the number of physical cells with invalid data exceeds the threshold, the system activates appropriate garbage collection modes, thereby maintaining storage efficiency without compromising read and write performance during normal operations.
3Quantity of substance
If data consolidation is performed, then storage space is optimized, but service quality may be impacted
Solution Approach 1:
The patent uses the parameter of physical cell state (number of cells with invalid data) to trigger data consolidation only when necessary. By monitoring this parameter and comparing it against a threshold, the system ensures that consolidation operations are performed only when storage space optimization is needed, thereby maintaining service quality while achieving storage optimization.
Solution Approach 2:
The memory controller continuously monitors the state of physical cells and uses this feedback to determine when garbage collection is required. This feedback mechanism ensures that data consolidation is performed only when the number of physical cells with invalid data exceeds the threshold, thereby optimizing storage space while maintaining service quality through timely and necessary consolidation operations.
Data Source
AI summary
Provided are a memory controller and a data storage system. The memory controller is used to perform multiple steps. In response to a first parameter of a register being updated, a default mode is switched to a specified mode. A second parameter of the register is read to determine a specified threshold. State information of the physical cell is obtained according to the specified mode. If the state information of the physical cell meets the specified threshold, a data consolidation program is performed on the memory according to the specified mode. In this way, the memory controller operates in different modes in different situations to perform the data consolidation program.