User-mode file sending method, file receiving method, and file transceiving device

Abstract

The invention discloses a user-mode file sending method, a file receiving method and a file sending and receiving device. The file sending method comprises the following steps: allocating a data reading and sending area, a data receiving and writing area and a data buffer area in the user-mode area; creating a data sending process; obtaining a file to be sent corresponding to the data sending process from the data buffer area; constructing metadata of the data sending process and recording the metadata to the data reading and sending area; sequentially processing one or more metadata of the reading and sending area, wherein the processing of the metadata comprises sending the file to a network adapter via a user-mode network device driver, and sending the file by the network adapter. According to the technical scheme of the invention, the data receiving and sending are completed by using the user-mode space of the data receiving and sending process, and the kernel state space of the process is not needed to completely shield the kernel, that is, the copy, the context switching, and the interruption can be remarkably reduced, and the performance of the data sending and sending is improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a file sending method, a file receiving method and a file sending and receiving device in a user state. Background technique [0002] In recent years, NPU (embedded neural network processor), GPU (graphics processing unit), SSD (solid state drive), NVM (non-volatile memory), Infiniband (a "conversion cable" technology that supports multiple concurrent links) ), 400GbE (400G Ethernet) and other new high-performance hardware devices represented by computing, storage, and network have ushered in rapid development, but software systems have stagnated. In the long-distance data transmission, the delay of the software system accounts for an increasingly large proportion. [0003] Generally, the performance loss of a software system mainly comes from three aspects: [0004] (1) Copy (Copy). Also known as duplication, copy operations cause data redundancy and cause latency and ...

AI Technical Summary

Problems solved by technology

Typically, in the scenario where multiple clients send files to the same receiving end at high concurrency, the CPU at the receiving end is constantly busy with interrupts, repeatedly reserving the scene, and there are relatively few opportunities to actually process data, resulting in serious delays. was a disaster

[0007] In the process of sending and receiving files in the prior art, a large number of copying, context switching, and interruption are generated.

Images