Memory Controller Dynamic Correlation for I/O Throughput
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Solution Overview
Problem
Current memory systems face inefficiencies in data input/output performance due to operational complexity and performance degradation, particularly in handling multiple memory dies, which affects stability and lifespan, and requires unnecessary correlation operations that increase overhead.
Innovation Solution
A memory system with a controller that dynamically determines whether to perform correlation operations based on pending credits and operation states of memory dies, allowing for interleaving data operations across multiple memory dies without address limitations, thereby optimizing resource usage and reducing overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If correlation operations are performed on all read requests to enable interleaving across memory dies, then data input/output performance is improved, but operational overhead and complexity increase
Solution Approach 1:
The system dynamically determines whether to perform correlation operations based on pending credit values and current operation states of memory dies. This dynamic approach allows the system to adaptively enable or disable correlation operations, optimizing I/O performance when conditions are favorable while reducing overhead when they are not, thus resolving the contradiction between improved productivity and reduced device complexity.
2Productivity
If correlation operations are performed on all read requests, then interleaving efficiency is improved, but overhead and processing time increase
Solution Approach 1:
The system performs correlation operations only on selected read requests rather than all requests. By using pending credit values to identify suitable candidates for correlation operations, the system applies partial action - performing the beneficial interleaving operation only where and when it will be effective, thereby improving interleaving efficiency without incurring the full overhead of universal correlation processing.
3Reliability
If memory systems use address limitation structures for interleaving operations, then operational stability is improved, but adaptability and resource utilization decrease
Solution Approach 1:
The system dynamically selects read requests for correlation operations based on pending credit values and current memory die states, rather than using fixed address limitation structures. This dynamic selection mechanism provides adaptability to different operating conditions and memory configurations, improving resource utilization while maintaining operational stability through controlled correlation operations.
Data Source
AI summary
A memory system includes: a plurality of memory dies, and a controller selects a second read request, including at least a portion of a plurality of first read requests, so that the memory dies interleave and output data corresponding to the first read requests, and performs a correlation operation for the selected second read request, when the second read request is selected, the controller determines whether the correlation operation is performed or not before a time at which the second read request is selected, determines whether the correlation operation is successful or not, determines a pending credit in response to an operation state of the memory dies at the time at which the second read request is selected, and determines whether to perform the correlation operation or not for the second read request that is selected at the time at which the second read request is selected based on the pending credit.