Multi-processor load distribution-regulation method

Abstract

The multiprocessor load distribution adjustment method relates to the field of data communication, in particular to the adjustment technology of each processor load distribution in multiprocessor network equipment. The invention comprises the following steps: a. the central processing unit obtains the bandwidth status of the system interface slot; b. according to the processing capability of each processor and the bandwidth status of the system interface slot, the central processing unit allocates interfaces for each processor in proportion. The method of the invention makes the data flows processed by each processor basically equal during operation, distributes processor resources evenly and appropriately, and avoids uneven busyness and idleness of a multiprocessor system.

Description

technical field [0001] The invention relates to the field of data communication, in particular to an adjustment technology for load distribution of each processor in a multi-processor network device. Background technique [0002] In existing data communication systems, network node devices with high performance and complexity requirements usually adopt a distributed system architecture to process data forwarding tasks of various interfaces at high speed. The main task of this network device is to forward data packets at a very high speed, so most of the multiple processors of the network device handle forwarding tasks. [0003] In today's multi-processor network equipment, the load distribution of the processors that handle forwarding tasks is usually static, that is, it has been fixed at design time, that is to say, a certain processor handles one or more interfaces receiving and receiving tasks fixedly. sent data. For example, processor 1 processes data in slots 1 and 2,...

AI Technical Summary

Problems solved by technology

A very serious shortcoming of this processing method is that the load of the processor cannot be dynamically adjusted in the actual environment. It may happen that a certain processor must handle multiple high-speed interfaces, while another processor only handles one The situation of the low-speed interface leads to serious uneven load on the processor, which makes the actual use efficiency low and the processor performance is seriously wasted.

The main problem brought by this method is that since the same interface may be processed by multiple processors, a mutual exclusion mechanism must be introduced, which affects the parallelism of multiple processors, thereby reducing the forwarding performance of the interface.

There is also a structure in which each processor is designed on each line card, and each interface line card has its own processor. Although this design bypasses the problem of multi-processor load distribution, it is followed by The sharp increase in the number of processors has led to an increase in costs; since each processor is not on the same printed circuit board, it is also difficult to connect processors at a high speed, or the cost of high-speed connections has also risen sharply; at the same time, the design difficulty of the system software has also increased sharply. increase

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