Managed Memory Controller Buffer-Based Command Intake Regulation
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Solution Overview
Problem
Existing memory devices face significant workload challenges due to limitations in processing read and write commands, leading to denial of service if the managed memory controller and/or memory devices are unable to timely process requests, resulting in paused application states during read operations.
Innovation Solution
Implementing a managed memory controller with read and write buffers, along with a central controller, to regulate the intake of commands and manage back pressure, ensuring efficient processing and reducing the workload by pausing new commands when buffers are full.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the managed memory controller accepts all incoming read and write commands without regulation, then the system can maximize command throughput and responsiveness, but the controller and memory devices may become overwhelmed leading to denial of service and paused application states
Solution Approach 1:
The patent applies preliminary action by implementing command intake regulation before commands are fully processed. The managed memory controller proactively monitors buffer status and regulates incoming commands based on current workload and buffer availability, preventing overload conditions before they occur. This anticipatory approach ensures service availability is maintained while still allowing maximum command throughput during normal operating conditions.
2Loss of time
If the managed memory controller processes all commands immediately, then response time is minimized, but the workload becomes unmanageable during high-demand periods causing system failure
Solution Approach 1:
The patent introduces an intermediary command intake regulation mechanism between the command source and the processing units. This intermediary layer monitors system state, manages command queues, and regulates flow to processing units based on current capacity. It acts as a buffer that smooths out workload peaks while maintaining reasonable response times, effectively managing complexity without sacrificing performance.
3Device complexity
If the managed memory controller accepts commands without intake regulation, then the system operates with simple control logic, but buffer overflow conditions occur leading to denial of service
Solution Approach 1:
The patent implements feedback-based command intake regulation where the managed memory controller continuously monitors buffer status, command queue depth, and processing capacity. Based on this feedback, the controller dynamically adjusts command acceptance rates, pausing intake when buffers are near capacity and resuming when capacity becomes available. This feedback mechanism ensures service continuity while maintaining relatively simple control logic through standardized threshold-based decisions.
Data Source
AI summary
Managed memory controllers might include a plurality of host interface ports, a read buffer comprising read buffer entries, a write buffer comprising write buffer entries, and a central controller configured to cause the managed memory controller to regulate intake of read commands at an individual host interface port in response to a first number of read buffer entries plus write buffer entries that are allocated to any of the host interface ports, a second number of read buffer entries plus write buffer entries that are allocated to the individual host interface port, and a third number of read buffer entries that are allocated to the individual host interface port, and regulate intake of write commands at the individual host interface port in response to the first number, the second number, and a fourth number of write buffer entries that are allocated to the individual host interface port.