Method and system for communication of distributed system

Abstract

The invention discloses a method for communication of a distributed system, comprising the following steps: determining priority order of massage by an originating process unit and storing the priority order in a temporary buffer and a massage module; determining whether to process the massage by a target process unit according to synchronous serial number of the received massage sent by the massage module, and returning a response massage according to the processing result and storing in the massage module; and updating the temporary buffer by the originating process unit according to the response massge received from the massage module. The invention also discloses a system for communication of a distributed system. By adopting the method and the system in the invention, massage transmission order can be optimized, repeated massageis avoided, and the distributed system communication traffic is reduced, thus improving the communication reliability of the distributed system.

Description

technical field [0001] The present invention relates to the field of distributed system communication, in particular to a method and system for distributed system communication. Background technique [0002] In order to improve the processing capacity, complex data communication equipment generally adopts a distributed design and is equipped with multiple central processing units (CPU), each of which is responsible for the realization of some module functions in the system. Logically, the processes executed by different CPUs are relatively independent in function, and the communication traffic between each other is small; physically, different CPUs are in the same rack or the same computer room, and the physical connection is relatively stable and efficient. In order to make the entire data communication system run in harmony, processes on different CPUs need to communicate with each other, and the functions responsible for different CPUs are associated to realize more compl...

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Problems solved by technology

[0003] Generally, the communication between processes adopts the method of sending and receiving messages. When a message has priority, only after the message with high priority is sent and processed successfully, the message with low priority will be processed; when the message with high priority is sent or processed Failure, even if the message with low priority is sent successfully, the message with low priority will not be processed. In the prior art, mechanisms such as retransmission timer, waiting for confirmation message, sliding window or buffering are used to send and receive messages. The party did not prioritize the messages and did not send messages in the order of priority. As a result, messages with low priority were sent to the message receiver first, and the message receiver did not process messages with low priority until it received messages with high priority. low-priority messages are processed only after the messages are processed successfully

The order in which messages are sent has no priority. Sending low-priority messages to the message receiver first will only lead to busier inter-process communication, but the processing of low-priority messages will not help. At the same time, due to communication line problems, it may cause messages The sender cannot receive the confirmation message, so it thinks that the message has not been processed successfully or has not been processed, and sends the message repeatedly, causing the system to process the message repeatedly

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