Dynamic Host Performance Booster Threshold Tuning
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Solution Overview
Problem
Current memory systems face high variability in performance due to frequent activation and deactivation of host performance booster (HPB) regions, leading to increased latency and resource consumption, as they send logical to physical translation tables (L2P) frequently based on static thresholds, which do not account for varying usage patterns.
Innovation Solution
Dynamically tuning activation and deactivation thresholds for each HPB region based on the last HPB hit ratio and free HPB buffer space, allowing the memory system to optimize when to send L2P tables, reducing unnecessary transmissions and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If static thresholds are used for HPB region activation and deactivation, then the system operates with simple control logic, but performance variability increases due to frequent activation/deactivation cycles
Solution Approach 1:
The patent implements dynamic thresholds that adapt based on usage patterns and performance metrics. The system monitors read command frequencies and automatically adjusts activation/deactivation thresholds, transitioning from static to dynamic control to reduce performance variability while maintaining manageable complexity through automated adaptation.
Solution Approach 2:
The system incorporates feedback mechanisms by monitoring HPB hit ratios and read command patterns, then using this information to adjust thresholds. This closed-loop approach allows the system to learn from actual usage and optimize performance stability without requiring complex manual control logic.
2Device complexity
If static thresholds are used for HPB region activation, then the control mechanism is simple, but latency increases due to frequent L2P table transmissions
Solution Approach 1:
The system dynamically adjusts activation thresholds based on monitored usage patterns, increasing thresholds for frequently accessed regions to prevent premature deactivation and reduce unnecessary L2P table transmissions. This adaptive approach maintains simplicity while significantly reducing latency through intelligent threshold modulation.
3Ease of operation
If static thresholds are used for HPB region deactivation, then the system maintains simple operation, but resource consumption increases due to unnecessary L2P table sends
Solution Approach 1:
The system implements self-service through automated monitoring and adaptive threshold adjustment. By continuously observing usage patterns and autonomously optimizing thresholds, the system eliminates the need for complex manual configuration while reducing resource consumption through intelligent deactivation timing based on actual usage metrics.
4Ease of operation
If static thresholds are used for HPB activation, then the system is easy to operate, but productivity decreases due to frequent activation/deactivation cycles
Solution Approach 1:
The patent implements dynamic threshold adjustment that adapts to usage patterns, reducing unnecessary activation/deactivation cycles. The system monitors read command frequencies and automatically optimizes thresholds to maintain HPB regions in active states longer, thereby improving productivity while preserving ease of operation through automated adaptation.
Solution Approach 2:
By incorporating feedback from usage pattern monitoring, the system automatically adjusts thresholds to optimize performance. This feedback-driven approach maintains operational simplicity while significantly improving productivity by reducing futile activation/deactivation cycles through intelligent threshold modulation based on actual usage metrics.
Data Source
AI summary
Methods, systems, and devices for dynamically tuning host performance booster thresholds are described. A memory system may include a set of memory devices and an interface configured to communicate commands with a host system coupled with the memory system. The interface may communicate commands to the memory system according to a first command mode associated with a logical address space including a plurality of regions and communicate commands according to a second command mode associated with physical memory address. The memory system may further include a controller that may determine a region activated for the second command mode, receive a first plurality of commands, determine, upon deactivating the region, a first threshold based on a first quantity of read commands serviced according to the second command mode. The controller may activate the region for the second command based on a second quantity of read commands received exceeding the first threshold.