Memory Controller Preemptive Warning Before Background Folding
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Solution Overview
Problem
Existing memory sub-systems inefficiently perform garbage collection operations due to unawareness of data importance, leading to increased write amplitude and resource wastage.
Innovation Solution
A memory controller coordinates with the host to delay folding operations until a timer expires or an event occurs, allowing the host to selectively deallocate or invalidate data, thereby preventing unnecessary garbage collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the memory sub-system controller performs garbage collection operations without host coordination, then folding operations can be executed promptly, but write amplitude increases and resources are wasted due to unawareness of data importance
Solution Approach 1:
The memory sub-system controller sends a preliminary communication to the host indicating the intended folding operation before executing it. This allows the host to take preliminary action by deallocating or invalidating data that is about to be folded, thereby preventing unnecessary folding operations and reducing write amplitude while still allowing prompt execution of necessary folding operations.
2Productivity
If the memory sub-system controller performs garbage collection operations without host coordination, then operations can be executed promptly, but resources are wasted due to unawareness of data importance
Solution Approach 1:
The controller sends a communication to the host indicating the intended folding operation before execution. This preliminary notification allows the host to deallocate or invalidate data that is no longer needed, enabling the controller to skip unnecessary folding operations and conserve resources while maintaining efficient execution of necessary operations.
Data Source
AI summary
Aspects of the present disclosure configure a memory sub-system controller to allow a host to deallocate data prior to folding operations. The controller generates an instruction to fold data stored in an individual portion of the set of memory components. The controller, prior to executing the instruction to fold the data stored in the individual portion of the set of memory components, transmits a communication to a host indicative of the instruction to fold the data stored in the individual portion. The controller conditions execution of the instruction to fold the data stored in the individual portion of the set of memory components based on transmission of the communication to the host.