Storage System Private Public Queue Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In storage systems with multiple processors, providing private queues for each processor leads to a high resource demand on the interface device, potentially resulting in resource shortages and increased costs, while minimizing exclusion processing load is essential.
Innovation Solution
Implementing a storage system with a combination of private and public queues, where a private queue is allocated to a single processor without exclusion processing and public queues are shared among multiple processors, requiring exclusion processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If private queues are provided for each processor, then exclusion processing is eliminated and processing load is reduced, but the number of queues and resource usage in the interface device increases proportionally
Solution Approach 1:
The patent segments queues into two distinct types: private queues allocated to individual processors that require no exclusion processing, and public queues shared among multiple processors that do require exclusion processing. This segmentation allows the system to minimize exclusion processing for most processors while concentrating resource usage in shared public queues, thereby resolving the contradiction between processing load and resource usage.
2Productivity
If the number of processors is large, then processing capability is improved, but the number of private queues required increases leading to resource shortage in the interface device
Solution Approach 1:
The patent implements public queues that serve multiple processors simultaneously, making these queues universal resources. Instead of requiring one dedicated private queue per processor, multiple processors can share public queues, thereby supporting a large number of processors without proportionally increasing the total number of queues and interface device resources.
3Productivity
If private queues are allocated to all processors, then exclusion processing is minimized, but the cost of the interface device increases due to large resource allocation
Solution Approach 1:
The patent applies local quality by providing private queues selectively to specific processors based on their workload characteristics and I/O patterns, rather than uniformly to all processors. High-performance processors with intensive I/O demands receive private queues to minimize exclusion processing, while other processors share public queues, thereby optimizing exclusion processing efficiency without uniformly increasing device cost.
Data Source
AI summary
A storage system includes: a controller including a plurality of processors; an interface device; and a plurality of queues associated with the interface device. The plurality of queues each store data transmitted from a processor allocated to the queue to the interface device. The plurality of queues include a private queue and a public queue. The private queue is a queue allocated with only a first processor as one of the plurality of processors, the private queue requiring no exclusion processing when data is stored, whereas the public queue is a queue allocated with two or more second processors in the plurality of processors, the public queue requiring the exclusion processing when data is stored.