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Method, device and system for transmitting data

A technology for transmitting data and data, applied in the field of data transmission, can solve problems such as poor transmission performance, achieve low transmission delay and improve transmission performance

Active Publication Date: 2022-02-18
HANGZHOU HIKVISION SYST TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problem of poor transmission performance, embodiments of the present disclosure provide a data transmission method, device and system

Method used

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  • Method, device and system for transmitting data
  • Method, device and system for transmitting data
  • Method, device and system for transmitting data

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Embodiment Construction

[0093] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the implementation manners of the present disclosure will be further described in detail below in conjunction with the accompanying drawings.

[0094] In order to better understand the embodiments of the present disclosure, the RDMA unilateral write operation (WRITE) in the related art is firstly introduced:

[0095] RDMA unilateral write operation (WRITE): The memory and transmission model of the general operation of RDMA WRITE, such as figure 1 As shown, both the sending end and the receiving end are equipped with a unilateral memory area, and both are equipped with three queues, namely, the sending queue, the receiving queue and the completion queue. Both the sending end and the receiving end have corresponding HCA (Host Channel Adapter, main channel adapter).

[0096] In related technologies, the RDMA WRITE operation data transmission process can be divided into 3 ste...

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Abstract

The disclosure provides a data transmission method, device and system, which belong to the technical field of computers. The method includes: the memory area of ​​the sending end includes a data memory area and a control memory area, the address information of the data memory area of ​​the receiving end is stored in the control memory area of ​​the sending end, and when sending data, the target data is obtained and stored in the data memory area, According to the data volume of the target data, the address information of the target memory block to which the target data is to be written is obtained in the control memory area of ​​the sending end, wherein the target memory block belongs to the receiving end, and according to the address information of the target memory block, the The target data is written into the target memory block, and the confirmation message sent by the receiving end through a unilateral operation is received after the target data is processed. By adopting the present disclosure, the overall transmission performance can be improved.

Description

technical field [0001] The present disclosure relates to the field of computer technology, and in particular to a data transmission method, device and system. Background technique [0002] With the development of computer technology and network technology, there is a large amount of data to be transmitted between two network devices, so the delay of data transmission will directly affect the efficiency of data processing. In order to increase the delay of data transmission, a high-bandwidth, low-latency network transmission technology, that is, RDMA (Remote Direct Memory Access, remote direct data access) technology is proposed. [0003] In related technologies, when using RDMA technology, each time data is sent, the sending end uses a bilateral operation to obtain the memory address information of the receiving end, the sending end uses a unilateral operation to read and write memory, and the receiving end uses a bilateral operation to notify the sending end After the data...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/28G06F15/173
CPCG06F13/28G06F15/17331
Inventor 陈文祥叶敏王伟林起芊
Owner HANGZHOU HIKVISION SYST TECH