Memory Controller Command Queue Optimization
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Solution Overview
Problem
Existing memory device controllers face inefficiencies in managing command queues, leading to suboptimal operation and throughput due to the lack of effective mechanisms for checking and converting commands based on busy time and address information.
Innovation Solution
A controller system that includes a command queue, a command queue controller, and a command information storage, which applies pop and push signals to check and convert commands, generating check-result data to prioritize commands by busy time, erase redundant commands, and combine successive address commands, thereby optimizing the command queue's operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If commands are managed in a simple FIFO queue without checking or conversion, then the device complexity is low, but the productivity and throughput are suboptimal
Solution Approach 1:
The controller performs preliminary checking of commands against a check table before executing them. The check table stores pre-analyzed information about command compatibility, busy times, and address relationships. By performing this analysis in advance, the controller can identify redundant or conflicting commands before they are executed, improving throughput without adding complex real-time decision-making logic.
Solution Approach 2:
The patent introduces a command queue controller as an intermediary component between the host and the memory device. This controller intercepts commands, checks them against the check table, and converts or filters commands based on the checking results. This intermediary layer manages the complexity of command optimization while keeping the host and memory device interfaces simple.
2Loss of time
If all commands are executed without checking for redundancy, then the ease of operation is high, but the loss of time due to redundant operations increases
Solution Approach 1:
The controller implements a feedback mechanism where the checking result of each command is used to determine whether to execute, skip, or convert subsequent commands. The check table provides feedback information about command relationships, allowing the controller to make intelligent decisions about command execution. This feedback loop eliminates redundant commands while maintaining simple operation through automated decision-making.
3Productivity
If commands are not converted or optimized, then the device complexity is low, but the productivity and resource utilization are suboptimal
Solution Approach 1:
The controller changes parameters of commands based on the checking results. This includes modifying command sequences, adjusting timing parameters, and converting commands to more efficient forms when the check table indicates optimization opportunities. By dynamically changing command parameters based on pre-analyzed information, the system improves execution efficiency without requiring complex real-time analysis.
Data Source
AI summary
A memory controller for controlling an operation of a device may include a command queue, a command queue controller, and a command information storage. The command queue may store a plurality of commands. The command queue controller may control an operation of the command queue using a pop signal and a push signal. The command information storage may store command information corresponding to each of the commands stored in the command queue. The command queue controller may control the command queue by checking the commands stored in the command queue based on the command information and converting the checked commands based on a result of the checking.