Boot Region Table for Dynamic Read Speed Optimization
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Solution Overview
Problem
Conventional boot processes are inefficient due to the need to load large lists of logical block addresses (LBAs) multiple times, and preconfiguring pinned regions assumes sequential reads, which does not align with the semi-random nature of actual boot up data access.
Innovation Solution
A dynamically updated boot region table is created by tracing read requests during the boot process, capturing sequences and lengths, allowing for preloading data in a predicted sequence, making random reads appear sequential and improving read speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If large lists of logical block addresses are loaded multiple times during boot process, then all necessary data can be accessed, but boot time increases significantly
Solution Approach 1:
The patent preloads data into a cache memory before the actual boot process begins. By anticipating and preloading the necessary data blocks during system initialization or idle periods, the system avoids the need to load large lists of logical block addresses multiple times during boot, thereby reducing boot time while ensuring all necessary data is available.
Solution Approach 2:
The patent implements a dynamic caching strategy where the cache content is adaptively updated based on actual read patterns observed during boot operations. The system dynamically identifies frequently accessed or sequentially accessed blocks and prioritizes their loading into cache, optimizing the balance between data access completeness and boot speed based on runtime behavior.
2Productivity
If pinned regions are preconfigured assuming sequential reads, then read operations can be optimized, but the assumption does not align with semi-random access patterns in actual boot up
Solution Approach 1:
The patent transitions from static preconfigured pinned regions to a dynamic caching mechanism that adapts to actual access patterns. The system monitors read requests during boot operations and dynamically updates the cache to reflect observed sequential and semi-random access patterns, thereby maintaining read operation efficiency while adapting to the true nature of boot time data access.
Solution Approach 2:
The patent incorporates feedback from actual read operations to refine and update the cache content. By monitoring which blocks are actually accessed during boot and how they are accessed (sequentially or randomly), the system adjusts its caching strategy accordingly, ensuring that pinned regions or cache entries are optimized based on real-world usage rather than assumptions.
3Speed
If data is preloaded in predicted sequence making random reads appear sequential, then read speed improves, but the system must accurately predict access patterns
Solution Approach 1:
The patent employs a strategy of loading slightly more data into the cache than strictly necessary, or loading data with a degree of redundancy. By preloading additional potential candidate blocks alongside the predicted sequential access blocks, the system ensures that even if prediction accuracy is not perfect, the necessary data is still available in cache, thereby maintaining high read speed without requiring perfect prediction accuracy.
Solution Approach 2:
The patent implements a dynamic refinement process where the prediction accuracy improves over time as the system observes actual access patterns. The caching strategy starts with predicted sequences but continuously adapts based on observed read behavior, allowing the system to achieve high read speeds even with initially imperfect predictions by learning and adjusting to the actual semi-random access patterns of the boot process.
Data Source
AI summary
A method includes receiving a first read request during a first boot time. The first read request includes a logical block address and a length. The method also includes tracing the first read request. The method further includes creating a table using the traced first read request. The table includes a sequential record of each traced read request received during the first boot time. The method further includes transmitting the table to a host system during a second boot time. The method further includes receiving a second read request during the second boot time. The second read request includes a logical to physical representation obtained using the table and the logical block address.