Network Queue Slot Allocation for Large Request Processing
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Solution Overview
Problem
Distributed computing systems face challenges in efficiently processing large requests without requiring all data to be buffered in memory, leading to potential memory shortages and unfair allocation of system resources, especially when handling large network packets.
Innovation Solution
Implementing a system with fixed-size memory and inter-communicating queues, where requests are processed in slots that are allocated and released sequentially, ensuring fairness by decomposing large requests into smaller ones and using back-pressure to manage resource allocation, allowing for self-regulation without dynamic memory allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all data is buffered in memory for processing large requests, then processing completeness is improved, but memory availability deteriorates
Solution Approach 1:
The patent segments large requests into smaller chunks that can be processed in fixed-size buffers. Instead of buffering entire large requests in memory, the system divides them into manageable pieces that fit within fixed buffer allocations, allowing processing to continue without requiring excessive memory resources.
Solution Approach 2:
The patent introduces fixed-size buffers as intermediary storage between network input and processing. These buffers act as mediators that hold data temporarily without requiring dynamic memory allocation, enabling continuous processing while maintaining bounded memory usage.
2Adaptability or versatility
If dynamic memory allocation is used for processing requests, then resource flexibility is improved, but fairness in resource allocation deteriorates
Solution Approach 1:
The patent implements dynamic slot allocation within fixed-size buffers. While the overall buffer size remains fixed to ensure fairness, the allocation of slots within buffers can dynamically adjust to different request types and sizes, providing flexibility without compromising the fairness guarantees of fixed total memory usage.
Solution Approach 2:
The patent changes the parameter from dynamic total memory allocation to fixed memory allocation with dynamic internal slot management. This parameter change maintains fairness through fixed bounds while preserving flexibility through adaptive slot assignment based on request characteristics.
3Quantity of substance
If fixed-size buffers are used for processing requests, then memory availability is improved, but processing throughput may deteriorate
Solution Approach 1:
The patent ensures continuous processing by implementing a slot allocation system that prevents buffer starvation. When slots are available in fixed-size buffers, processing continues without interruption. The system monitors buffer availability and maintains continuous useful action by processing requests as soon as slots become available, eliminating idle time while respecting fixed memory constraints.
Data Source
AI summary
An available receive slot of an incoming network queue can be allocated to a network packet of a request received at a computing node, and receipt of the network packet can be processed using the allocated receive slot. An available free I/O control block of a free I/O control block queue and an available request slot from a free request queue can be allocated to the network packet after completion of the receipt processing. The free I/O control block queue and free request queue respectively have a same number of I/O queue blocks and request slots as the incoming network queue has receive slots. An I/O task required for the network packet can be completed using the allocated I/O control block, and an available send slot of an outgoing network queue can be allocated to send a reply to a client machine from which the request was received.