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Zero-copy data transmission method based on Rsocket protocol

A data transmission method and data transmission system technology, applied in the field of network transmission, can solve problems such as transmission performance impact, and achieve the effect of ensuring security

Inactive Publication Date: 2021-07-02
CENT SOUTH UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When transferring large amounts of data, copy overhead can significantly affect transfer performance
And there is no public report on the zero-copy transmission method based on the Rsockets protocol

Method used

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  • Zero-copy data transmission method based on Rsocket protocol
  • Zero-copy data transmission method based on Rsocket protocol
  • Zero-copy data transmission method based on Rsocket protocol

Examples

Experimental program
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Embodiment Construction

[0136] The present invention will be further described below with reference to the accompanying drawings.

[0137] The overall process of the present invention is as Figure 4 shown, including the following steps:

[0138] The first step is to build a zero-copy data transmission system based on the Rsockets protocol. A zero-copy data transmission system based on the Rsockets protocol such as image 3 shown by figure 1 The shown RDMA transmission system based on Rsockets protocol (including socket application, OFED library, OFED kernel library and RDMA network card), memory management module, memory processing module, and work request module. Both the sending end and the receiving end are equipped with a zero-copy data transmission system based on the Rsockets protocol.

[0139] and figure 1 Similarly, in the RDMA transmission system based on the Rsockets protocol, the socket application and the OFED library are installed in the user space, the Rsockets protocol is part of...

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Abstract

The invention discloses a zero-copy data transmission method based on an Rsocket protocol, and aims to eliminate copy overhead. According to the technical scheme, a zero-copy data transmission system composed of an RDMA transmission system based on the Rsocket protocol, a memory management module, a memory processing module and a work request module is firstly constructed. The sending end socket application and the receiving end socket application create RDMA resources, the memory management module and the memory processing module cooperate to create a cache pool and establish memory mapping for the cache pool, the sending end socket application sends data from a sending cache, and the memory management module and the memory processing module process the data to obtain a physical address and the number of pages. The work request module constructs a corresponding work request, an RDMA network card executes the work request and sends data to a receiving end cache pool, a receiving end memory management module establishes memory mapping between a receiving cache and a data physical address in the cache pool, and the data arrives successfully. According to the invention, zero-copy data transmission is realized.

Description

technical field [0001] The invention relates to the field of network transmission, in particular to a high-speed data transmission method centered on RDMA (Remote Direct Memory Access, remote direct memory access). Background technique [0002] RDMA can directly transfer data from the memory of the sender to the memory of the receiver without the participation of the operating system, and consumes very low CPU resources. The RDMA technology first appeared on the InfiniBand network. Later, in order to be able to use the RDMA technology on the Ethernet, the InfiniBand Industry Association proposed the RoCE (RDMA over ConvergedEthernet, RDMA based on Converged Ethernet) technology. However, unlike the TCP / IP network, RoCE does not use the TCP / IP protocol stack, but mainly inherits the InfiniBand communication protocol, which makes RoCE unable to be directly deployed in the data center based on the TCP / IP network. The data center is still running socket-based applications. If a...

Claims

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Application Information

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IPC IPC(8): G06F13/28H04L29/06
CPCG06F13/28H04L69/26
Inventor 黄旺刘亚萍张硕
Owner CENT SOUTH UNIV
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