Dynamic Buffer Slot Allocation for Memory Systems

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Solution Overview

Problem

Memory systems face challenges in dynamically adjusting buffer sizes to optimize read and write performance while minimizing overhead, as existing methods are inefficient in reallocating buffer slots based on changing operation ratios.

Innovation Solution

A memory controller dynamically configures buffer slots within a buffer pool by updating count information on write and read buffer slots, returning slots to the pool when threshold values are reached, and setting initial values based on operation requirements, allowing for optimal allocation and reallocation of resources.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the buffer size is dynamically changed to optimize read and write performance, then the performance is improved, but the overhead caused by the change increases

Engineering Contradiction:
Improveread and write performanceVSAvoidoverhead of buffer size change
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent implements dynamic buffer size adjustment by allowing the buffer pool to flexibly allocate buffer slots between read buffer and write buffer based on real-time operation ratios. The buffer size for each operation type is not fixed but adapts dynamically through slot allocation, resolving the contradiction by making the system responsive to changing workloads while maintaining efficient resource utilization.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the parameter of buffer slot allocation dynamically based on operation ratios. By monitoring the ratio of read to write operations and adjusting the number of buffer slots allocated accordingly, the system optimizes performance for current workload characteristics while minimizing the overhead of frequent reallocations through efficient slot management.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If the buffer slots are reallocated based on changing operation ratios, then the adaptability is improved, but the complexity of buffer management increases

Engineering Contradiction:
Improvebuffer allocation adaptabilityVSAvoidbuffer management complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent employs feedback mechanisms by continuously monitoring operation ratios (read vs. write operations) and using this information to adjust buffer slot allocations. This feedback loop enables the buffer management system to adapt automatically to changing workload patterns without requiring complex manual intervention, thereby improving adaptability while keeping management complexity manageable through automated decision-making.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The buffer pool serves multiple functions by dynamically allocating slots for both read and write operations within a single unified structure. This multi-functional approach allows the same buffer pool to handle different operation types efficiently, improving adaptability to various workload scenarios while reducing the complexity of managing separate fixed buffers for each operation type.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11262939B2Memory system, memory controller, and operation method
Publication Date: 2022.03.01 SK HYNIX INC
  • US11262939B2 patent drawing
  • US11262939B2 patent drawing
  • US11262939B2 patent drawing

AI summary

Embodiments of the present disclosure relate to a memory system, a memory controller and an operating method, which allocate one or more of a plurality of buffer slots in a buffer pool to a write buffer as write buffer slots or to a read buffer as read buffer slots, configures initial values of count information on the respective write buffer slots and the respective read buffer slots, which indicate remaining allocation periods respectively, and updates the count information on each of at least some of the write buffer slots when data is written to the write buffer or updates the count information on each of at least some of the read buffer slots when data is read out from the read buffer, thereby providing optimal data read and write performance and minimizing overhead caused in the process of dynamically changing the buffer size.