SSD Controller Collision Reduction via Just-in-Time Resource Allocation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current solid-state drive (SSD) systems face performance degradation due to collisions among competing commands requiring shared resources, leading to sequential execution and inefficient use of resources.
Innovation Solution
Implementing a just-in-time resource allocation system with a controller that monitors collision rates and adjusts command ratios, allowing partial commands to be executed as resources become available, thereby reducing collisions and enabling parallel processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If commands are executed sequentially to avoid collisions, then collision reduction is achieved, but productivity deteriorates due to inefficient resource utilization
Solution Approach 1:
The patent segments commands into multiple parts and divides resources into multiple channels, allowing partial commands to be executed in parallel on different channels simultaneously. This segmentation enables collision avoidance while maintaining productivity by executing independent command parts concurrently rather than sequentially.
Solution Approach 2:
The patent implements dynamic resource allocation where the controller adaptively assigns resources to commands based on real-time availability and collision monitoring. The system dynamically adjusts command execution by monitoring collision rates and modifying resource distribution, allowing optimal parallel execution when resources are available and sequential execution only when necessary to avoid collisions.
2Productivity
If parallel channels are used to increase throughput, then productivity is improved, but device complexity increases due to resource arbitration requirements
Solution Approach 1:
The patent implements self-service resource arbitration where the controller automatically monitors collision rates and adjusts resource allocation without external intervention. The system self-regulates by detecting collisions and dynamically modifying command execution strategies, reducing the need for complex external arbitration mechanisms while maintaining high throughput through parallel channels.
3Reliability
If command ratios are adjusted to reduce collisions, then reliability is improved, but device complexity increases due to monitoring and adjustment mechanisms
Solution Approach 1:
The patent implements feedback mechanisms where the controller continuously monitors collision rates and uses this information to dynamically adjust command execution ratios and resource allocation. The system receives feedback from collision detection and automatically modifies its behavior to optimize the balance between parallel execution and collision avoidance, reducing the need for complex manual configuration.
Data Source
AI summary
Method and apparatus for managing data in a storage device, such as a solid-state drive (SSD). In some embodiments, a main memory has memory cells arranged on dies arranged as die sets accessible using parallel channels. A controller is configured to arbitrate resources required by access commands to transfer data to or from the main memory using the parallel channels, to monitor an occurrence rate of collisions between commands requiring an overlapping set of the resources, and to adjust a ratio among different types of commands executed by the controller responsive to the occurrence rate of the collisions. In further embodiments, the controller may divide a full command into multiple partial commands, each of which are executed as the associated system resources become available. In some cases, the ratio is established between read commands and write commands issued to the main memory.