Host Garbage Collection Controller for Storage Latency
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Solution Overview
Problem
Existing computing systems face performance bottlenecks due to inefficient garbage collection in storage devices, which can lead to decreased system performance and increased latency.
Innovation Solution
A computing system and method that includes a host device with a garbage collection controller and an idle time processor, which proactively performs garbage collection on storage devices by requesting health information, garbage collection cost information, and instructing the storage device to perform garbage collection based on cost and idle time considerations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If garbage collection is performed reactively (when needed), then storage device performance is maintained, but system latency increases and performance bottlenecks occur
Solution Approach 1:
The host device performs garbage collection proactively by predicting future GC demands based on health information and write amounts before they actually occur. This preliminary action prevents performance bottlenecks and reduces latency by ensuring free blocks are available in advance, rather than waiting for reactive GC operations.
Solution Approach 2:
The system dynamically adjusts garbage collection timing and intensity based on real-time health information, write amounts, and predicted GC costs. This dynamic approach allows the system to optimize performance by performing GC during appropriate windows while minimizing latency impact, adapting to changing storage device conditions.
2Productivity
If garbage collection is performed frequently, then free blocks are secured and performance is maintained, but system efficiency decreases due to excessive GC operations
Solution Approach 1:
The host device receives feedback from the storage device in the form of health information including write amounts and performance metrics. This feedback is used to predict future garbage collection costs and determine optimal GC timing, preventing both excessive GC operations and performance-degrading delays. The system adjusts GC frequency based on actual storage device conditions and predicted needs.
3Speed
If garbage collection is delayed, then system responsiveness is improved, but storage device performance degrades due to lack of free blocks
Solution Approach 1:
The system performs garbage collection in advance based on predicted future demands derived from health information and write amount analysis. This preliminary action ensures that free blocks are secured before they are actually needed, maintaining storage device performance while allowing the system to respond to host requests without delay.
Data Source
AI summary
The present technology relates to an electronic device. According to the present technology, a host device may include a garbage collection controller and an idle time processor. The garbage collection controller may provide, to a storage device, a health information request command for requesting health information including a host write amount and a storage device write amount, provide, to the storage device, a first garbage collection control command for requesting garbage collection cost information based on the health information, provide, to the storage device, a second garbage collection control command for instructing to perform garbage collection based on the garbage collection cost information and an idle time of the storage device. The idle time processor may process information on the idle time.