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High concurrent data transmission method based on RDMA (Remote Direct Memory Access)

A data transmission method and technology of a data transmission system, applied in transmission systems, electrical components, etc., can solve problems affecting system scalability and achieve the effects of reducing data duplication, efficient concurrency control, and reducing processing pressure

Active Publication Date: 2017-05-10
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no general-purpose data transmission module to efficiently handle different network I / O characteristics. At the same time, in terms of concurrency control, a centralized synchronization model is still used, which seriously affects the scalability of the system.

Method used

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  • High concurrent data transmission method based on RDMA (Remote Direct Memory Access)
  • High concurrent data transmission method based on RDMA (Remote Direct Memory Access)
  • High concurrent data transmission method based on RDMA (Remote Direct Memory Access)

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Embodiment Construction

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0028] These and other aspects of embodiments of the invention will become apparent with reference to the following description and drawings. In these descriptions and drawings, some specific implementation manners in the embodiments of the present invention are specifically disclosed to represent some ways of implementing the principles of the embodiments of the present invention, but it should be understood that the scope of the embodiments of the present invention is not limited by this limit. On the contrary, the embodiments of the ...

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Abstract

The invention discloses a high concurrent data transmission method based on RDMA (Remote Direct Memory Access). The method comprises the steps of establishing a graded buffer area before a client accesses a data transmission system; actively carrying out data transfer among a user buffer area, the graded buffer area and a remote memory area by the client when remote data read / write is carried out; and setting a lock field at the head part of each independent data block of the remote memory area by a server, wherein the lock field is used for concurrent control, when a plurality of clients concurrently read / write data, the concurrent control is carried out through a distributed lock protocol that the server locks locally and the clients unlock remotely. The method has the advantages that the data replication is reduced when a file is read / written, the processing pressure of the server is reduced, and the efficient concurrent control is provided.

Description

technical field [0001] The invention relates to the field of distributed storage systems, in particular to an RDMA-based high-concurrency data transmission method. Background technique [0002] Remote Direct Memory Access (RDMA) refers to direct access to remote memory without the direct participation of both host operating systems, thereby providing high bandwidth and low latency features. [0003] Data transmission in a distributed environment determines the overall I / O performance of the system, and this type of technology is widely used in distributed file systems and database systems. Traditional distributed systems mostly use disks as storage media, and transmit data through remote procedure call modules based on TCP / IP. Due to low disk bandwidth and high latency, the network transmission module itself will not become a bottleneck. In recent years, memory has become increasingly In-memory computing, which is cheap and transfers storage and computing to memory, has bec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08
CPCH04L67/1097H04L67/568
Inventor 陆游游舒继武陈游旻
Owner TSINGHUA UNIV
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