Method for managing flux of packet inflowing CPU system

Abstract

The invention offers a flow management method for the messages inflowing to the CPU system, including the following steps: step 1, analyzing the performance requirement from a function modular in theCPU system, and ensuring the priority and flow requirement of the messages required from the function modular; step 2, providing with plurality of layers with mutual relevance for the distribution ofthe messages according to the performance requirement; step 3, providing with the connection relationship and attribute of the layers according to the performance requirement and the CPU ability in the CPU system, ensuing the message flowing, at the same time, dispatching messages layer by layer on basis of priority order. The invention not only improves the coordination and operation abilities ofthe system and the stability, but also satisfies the consideration of the system comprehensive performance to the different environment applied with much flexibility; simplifies the software design and operation load; at last, declines at any time the problem of overload for the CPU because the message processing of the CPU is controlled by the flow management.

Description

technical field [0001] The invention relates to the technical field of network equipment processing, in particular to a CPU flow management method for ensuring quality of service. Background technique [0002] With the rise of Metro Ethernet, the traffic management technology that distinguishes user levels and different services of users to achieve precise service quality assurance has matured and gradually gained a dominant position in carrier-class applications. In a network with traffic management, the CPU needs to use methods such as deep packet inspection (DPI) to identify and sample packet traffic, and interact more with peer devices to achieve real-time traffic monitoring and complex service quality management strategy. In such a network, the matching of narrow bandwidth and high-speed ports, as well as the precise flow requirements of each functional module, make the CPU, which is already a weak link, face more serious challenges. [0003] Although the existing str...

AI Technical Summary

Problems solved by technology

Regardless of how the software and hardware queues are scheduled, the scheduling methods of different modules and their services and the bandwidth for sending CPU messages cannot be controlled at the same time

[0005] 2) Existing mechanisms or strategies obtain performance improvement by sacrificing resources (CPU time, memory); lack of hardware-level traffic management, software requires caching or scheduling, heavy CPU burden, and lack of flexible control mechanism

In addition, in a complex network environment, it is necessary to limit the impact of service packets from certain physical ports on CPU ports, etc.

Therefore, each functional module in the CPU system has very different requirements for bandwidth and scheduling methods. A single functional module needs to distinguish and process multiple different business flows. The CPU is a port that requires more detailed service guarantees. The efficiency of the CPU system, and the method that can meet the performance requirements of each functional module

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