Multi-channel transmission method and system, computer equipment and readable storage medium

Abstract

The invention provides a multi-channel transmission method and system, computer equipment and a readable storage medium. The method comprises the steps that transmission channels are aggregated and packaged into a plurality of logic channels according to the size of IO tasks in an IO queue; and distributing the IO tasks in the IO queue to the plurality of logic channels for parallel execution. According to the multi-channel transmission method provided by the invention, the SAS transmission bus is distributed into a plurality of logic transmission channels, so that a plurality of IOs with different rates can run in a link at the same time, IO delay is reduced, and the data transmission performance is effectively improved.

Description

technical field [0001] The invention belongs to the field of computers, and in particular relates to a multi-channel transmission method, system, computer equipment and readable storage medium. Background technique [0002] In the context of the information age, data has undoubtedly become the basis for the development of all walks of life. Various types of applications have higher and higher requirements for data transmission and computing. For servers, how to improve data storage under the premise of ensuring data storage? Transmission rate and reducing latency have always been the focus of attention. The traditional implementation is to add Expandercache (referring to the cache on the SAS expansion card) in the storage link of the computer's SAS (SAS: Serial Attached SCSI, serial SCSI, a technology with several lines of computers) to optimize data transmission, that is, to continuously Optimize the use of the Expander cache, dynamically divide the cache through the Expan...

AI Technical Summary

Problems solved by technology

[0003] 1. High latency: IO commands are stored and processed by the Expander cache, which will generate higher data transmission latency compared to the end-to-end operation mode;

[0004] 2. Poor usability: The dynamic division function of Expander cache is implemented based on firmware. Currently, there are many types of HDD and SSD, and the functions of different models vary greatly. It is necessary to continuously upgrade the firmware code to adapt to the new functions of the hard disk. , which poses a relatively large challenge to development and maintenance;

[0005] 3. Low fault tolerance rate: If an exception or error occurs during the dynamic division of the cache by the Expander Firmware, it will affect the transmission of IO, cause the command to time out, and thus affect the operation of online business

[0006] Therefore, although the introduction of Expander cache can improve the data throughput of the SAS link, but at the same time, adding an IO task to the process of writing and reading will also increase the task delay

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